Math Problem Statement

Use the Cross-Multiplication Property of Proportions to solve the equation: \( \frac{1}{2} = \frac{2x - 1}{3} \).

Solution

To solve the equation using the cross-multiplication property, let's start with the given proportion:

12=2x13\frac{1}{2} = \frac{2x - 1}{3}

Using cross-multiplication, we multiply the numerator of each side by the denominator of the other side:

13=2(2x1)1 \cdot 3 = 2 \cdot (2x - 1)

This simplifies to:

3=4x23 = 4x - 2

Next, we'll add 2 to both sides to isolate terms involving xx:

3+2=4x3 + 2 = 4x

5=4x5 = 4x

Now, divide both sides by 4 to solve for xx:

x=54x = \frac{5}{4}

So, the solution is:

x=54x = \frac{5}{4}

Would you like further details on this solution or have any questions?

Here are 5 related questions that might deepen your understanding:

  1. What is the cross-multiplication property, and why does it work?
  2. How can we verify if the solution x=54x = \frac{5}{4} is correct?
  3. What would change if the terms in the proportion were different?
  4. Are there alternative methods to solve this proportion without cross-multiplication?
  5. Can you use cross-multiplication on equations that are not set up as proportions?

Tip: When working with proportions, remember to check that the denominators are non-zero before using cross-multiplication.

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Math Problem Analysis

Mathematical Concepts

Algebra
Proportions
Cross-Multiplication

Formulas

Cross-multiplication of proportions

Theorems

Cross-multiplication property

Suitable Grade Level

Grades 8-10