Math Problem Statement

Solve the equation (3/4)x - 1/2 = 7

Solution

The equation in the image is:

34x12=7\frac{3}{4}x - \frac{1}{2} = 7

Let's solve it step by step:

  1. Start by isolating the term involving xx. Add 12\frac{1}{2} to both sides: 34x=7+12\frac{3}{4}x = 7 + \frac{1}{2}

  2. To add 7+127 + \frac{1}{2}, convert 77 to a fraction with the same denominator: 7=142,so142+12=1527 = \frac{14}{2}, \quad \text{so} \quad \frac{14}{2} + \frac{1}{2} = \frac{15}{2} Therefore: 34x=152\frac{3}{4}x = \frac{15}{2}

  3. Now, solve for xx by multiplying both sides of the equation by the reciprocal of 34\frac{3}{4}, which is 43\frac{4}{3}: x=152×43x = \frac{15}{2} \times \frac{4}{3}

  4. Multiply the fractions: x=15×42×3=606=10x = \frac{15 \times 4}{2 \times 3} = \frac{60}{6} = 10

Thus, the solution is:

x=10x = 10

Would you like further details on any part of the solution?

Here are 5 related questions:

  1. How do you solve equations with fractions?
  2. What is the significance of multiplying by the reciprocal?
  3. How can you simplify complex fractions more efficiently?
  4. Why do we need to balance both sides of an equation?
  5. What other methods can be used to solve linear equations?

Tip: Always convert mixed numbers or whole numbers to fractions when dealing with fractional equations to simplify calculations.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Fractions

Formulas

Isolating x
Reciprocal multiplication
Fraction addition

Theorems

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Suitable Grade Level

Grades 8-10