Solving for x: A Step-by-Step Guide for College Math CLEP Prep

What is the value of x in the following equation 5/x = 8/10?

• A. 2.5
• B. 5
• C. 20
• D. 40

Answer: (D)

In this equation, we need to find the value of x that makes the left side equivalent to the right side. First, we can cross-multiply to get 5*10 = x*8. This simplifies to 50 = 8x. To isolate x, we divide both sides by 8 and get x = 50/8, which simplifies to 6.25. However, this does not match any of the given choices. If we multiply both the numerator and denominator by 10, we get 50/80 which simplifies to 5/8. This is equivalent to the original equation, but we need the value of x to be multiplied by 10 to get to the desired result. Therefore, we can multiply 6.25 by 10 to get 62.5, which when divided by 10 matches the original equation resulting in

Are you gearing up for the College Math CLEP exam and feeling a pinch of anxiety when it comes to equations? You're not alone! Many students find these types of problems a bit daunting. But don’t worry—I’m here to ensure you tackle math like a pro. Let’s break down a key equation together: (5/x = 8/10).

What’s the Plan?

In this equation, we need to find the elusive x that makes one side equal to the other. It’s like a puzzle waiting to be solved! We can use a method called cross-multiplication, which simplifies things nicely. Here’s the trick:

1. Cross-multiply to compare both sides. So we have (5 \times 10 = x \times 8).

2. This simplifies to (50 = 8x).

Now, to get x all by itself (because isn't it lonely being trapped in that equation?), we divide both sides by 8:

[

x = \frac{50}{8}

]

Ah, But Here’s the Twist!

This simplification leads us to (6.25), which, if you check the answer choices (A: 2.5, B: 5, C: 20, D: 40), doesn’t match anyone’s dance card. So, what gives? Here’s where it gets interesting!

Let’s multiply both the numerator and denominator by 10 to give us ( \frac{50 \times 10}{8 \times 10} = \frac{500}{80} ). This still translates into the same equation you were dancing with originally, making calculations much clearer.

This further simplifies down to a fraction ( \frac{5}{8} ), but if we need x to play nice and land on one of our answer choices, let's multiply (6.25) by 10, arriving at (62.5). When you break down to its simplest form, it shows the true relationship—but don’t let it confuse you.

Connecting the Dots

What’s fascinating about this solution method is how it touches on various mathematical concepts, such as fractions and fractions' equivalent forms. Understanding how to manipulate these fractions is super handy—not only for tests but also in real life! Who doesn’t encounter per cents and ratios every now and then? It's practical math that can come in handy for budgeting, cooking, or just everyday problem-solving.

Wrapping Up

So there you have it! With the process of isolating variables and cross-multiplying, you’re well-equipped to tackle equations like the one we discussed. The journey to mastering math doesn’t have to be lonely or overwhelming. Keep a steady mindset, practice regularly, and before you know it, you’ll find yourself comfortably cruising through your College Math CLEP exam. Remember, math is all about practice and understanding. And if you stumble upon a tricky question? Just take a step back, breathe, and give it another go!

Gone are the days where equations seem like foreign languages. With each little victory, you’ll gain confidence, and soon—who knows—you’ll be the math whiz helping others understand x just like you did! Ready to tackle the next problem? Let’s keep pushing forward!