Solve For X: $3ax + 4ax = 5ax + 4$

by Andrew McMorgan 35 views

Hey guys! Today we're diving into a cool algebra problem that might look a little intimidating at first glance, but trust me, it's totally manageable once you break it down. We're going to solve for x in the equation 3ax+4ax=5ax+43ax + 4ax = 5ax + 4, with the important condition that aa is not equal to zero (aeq0a eq 0). This little detail is super crucial because it means we won't be dividing by zero at any point, which is a big no-no in math. So, grab your notebooks, get comfy, and let's unravel this algebraic mystery together!

Simplifying the Equation: Combining Like Terms

The first step in solving any equation is to make it as simple as possible. Look at the left side of our equation: 3ax+4ax3ax + 4ax. See how both terms have the 'ax' part? That means they are like terms, and we can combine them just like you would combine '3 apples' and '4 apples' to get '7 apples'. In our case, 3ax+4ax3ax + 4ax simplifies to (3+4)ax(3+4)ax, which is 7ax7ax. So, our equation now looks like this: 7ax=5ax+47ax = 5ax + 4. This is a much cleaner version, and we're already making progress! This simplification step is key in algebra; it's all about tidying things up to see the core relationship between the variables. Don't underestimate the power of combining like terms – it's a foundational skill that opens the door to solving more complex equations. When you spot terms with the same variables raised to the same powers, give them a hug and combine them! It's like decluttering your mathematical workspace, making it easier to see what needs to be done next. Remember, the goal is always to isolate the variable we're interested in, and simplifying the equation is the first major stride towards that goal. By combining 3ax3ax and 4ax4ax into a single term 7ax7ax, we've significantly reduced the complexity of the equation, bringing us closer to finding the value of xx.

Isolating the 'x' Term: Moving Things Around

Our next mission is to get all the terms containing 'x' onto one side of the equation. Right now, we have 7ax7ax on the left and 5ax5ax on the right. To get them together, we need to move the 5ax5ax from the right side over to the left. How do we do that? We perform the opposite operation. Since 5ax5ax is being added on the right, we'll subtract 5ax5ax from both sides of the equation to keep it balanced. So, we have: 7ax5ax=5ax+45ax7ax - 5ax = 5ax + 4 - 5ax. On the left, 7ax5ax7ax - 5ax simplifies to 2ax2ax. On the right, the +5ax+5ax and 5ax-5ax cancel each other out, leaving us with just 44. Our equation has now transformed into 2ax=42ax = 4. This step is all about strategic manipulation. We're not just randomly moving numbers; we're using inverse operations to maintain the equality of the equation. Think of the equals sign as the center of a perfectly balanced scale. Whatever you do to one side, you must do to the other to keep it level. Subtracting 5ax5ax from both sides is like taking an equal weight off both pans of the scale – it stays balanced. This process of isolating terms is fundamental to solving for any variable. It requires a good understanding of how operations interact and how to use them to your advantage to peel back the layers of the equation and get closer to the unknown value.

Solving for 'x': The Final Step

We're almost there, guys! Our equation is now 2ax=42ax = 4. We want to find out what xx is equal to. Currently, xx is being multiplied by 2a2a. To isolate xx, we need to do the opposite of multiplying by 2a2a, which is dividing by 2a2a. And remember that crucial condition we were given? aeq0a eq 0. This means 2a2a also cannot be zero, so we are allowed to divide by 2a2a. We'll divide both sides of the equation by 2a2a: rac{2ax}{2a} = rac{4}{2a}. On the left side, the 2a2a in the numerator and the 2a2a in the denominator cancel each other out, leaving us with just xx. On the right side, we have rac{4}{2a}. We can simplify this fraction by dividing both the numerator (4) and the denominator (2) by their greatest common divisor, which is 2. So, rac{4}{2a} simplifies to rac{2}{a}. Therefore, our final solution is x = rac{2}{a}. Ta-da! We've successfully solved for xx. This final step, dividing to isolate the variable, is the payoff for all the rearranging we did. It's where we get the answer we've been working towards. Always remember to check if the divisor is non-zero to avoid any mathematical mishaps. In this case, the condition aeq0a eq 0 was our safety net, ensuring we could perform the division cleanly and arrive at a valid solution. The result, x = rac{2}{a}, shows that the value of xx is dependent on the value of aa. If aa changes, xx changes too! It's a beautiful illustration of how variables relate to each other in algebraic expressions.

Verification: Checking Our Work

It's always a smart move, especially in math class or when you're just practicing, to check if your answer is correct. This is called verification. We found that x = rac{2}{a}. Let's plug this back into our original equation: 3ax+4ax=5ax+43ax + 4ax = 5ax + 4. Substitute xx with rac{2}{a}: 3a( rac{2}{a}) + 4a( rac{2}{a}) = 5a( rac{2}{a}) + 4. Now, let's simplify both sides. On the left side, 3a( rac{2}{a}) becomes 3imes2=63 imes 2 = 6 (because the 'a's cancel out). Similarly, 4a( rac{2}{a}) becomes 4imes2=84 imes 2 = 8. So the left side is 6+8=146 + 8 = 14. Now let's look at the right side. 5a( rac{2}{a}) becomes 5imes2=105 imes 2 = 10 (again, the 'a's cancel). So the right side is 10+4=1410 + 4 = 14. Since the left side (14) equals the right side (14), our solution x = rac{2}{a} is correct! This verification step is super important because it builds confidence in your answer and helps catch any silly mistakes you might have made along the way. Think of it as a final quality check. If the numbers match up, you know you've done it right. If they don't, it's a signal to go back and review your steps, figure out where you might have gone wrong, and correct it. This iterative process of solving and checking is how you truly master algebraic manipulation and problem-solving. It reinforces the rules and ensures that your final answer is not just a guess, but a mathematically sound conclusion. So, never skip the verification – it’s your best friend in the world of mathematics!

Conclusion: Mastering Algebraic Equations

So there you have it, folks! We successfully navigated the equation 3ax+4ax=5ax+43ax + 4ax = 5ax + 4 and found that x = rac{2}{a}, provided aeq0a eq 0. We started by combining like terms, simplifying the equation to 7ax=5ax+47ax = 5ax + 4. Then, we isolated the xx terms by subtracting 5ax5ax from both sides, leading us to 2ax=42ax = 4. Finally, by dividing both sides by 2a2a (thanks to the condition aeq0a eq 0), we arrived at our solution. Remember these steps: simplify, isolate, and solve. And always, always verify your answer! Math problems, especially algebra, are like puzzles. Each step you take, each rule you apply, helps you unlock the next part of the puzzle until you finally reach the solution. The key is to stay calm, work systematically, and not be afraid to manipulate the equation using the rules you know. The condition aeq0a eq 0 was a vital clue, guiding us on when and how we could perform certain operations, like division. Understanding these conditions is just as important as knowing the steps themselves. So, keep practicing, keep challenging yourselves with different equations, and you'll become an algebra whiz in no time. Whether it's solving for xx, yy, or any other variable, the fundamental principles remain the same. It's about logical thinking, precise operations, and a bit of practice. Keep up the great work, and happy solving!