Math Problem Statement

  1. What value of x makes the equation ─5x ─ (─7 ─ 4x) = ─2(3x ─ 4) true? 

A. x = 3 

B. x = 5 

C. x = 13 

D. x = 15

Solution

To solve the equation and determine the value of xx, we need to simplify step by step.

The equation is:

5x(74x)=2(3x4)-5x - (-7 - 4x) = -2(3x - 4)

Step 1: Simplify the terms

Expand the parentheses:

5x+7+4x=6x+8-5x + 7 + 4x = -6x + 8

Combine like terms on the left-hand side:

(5x+4x)+7=6x+8(-5x + 4x) + 7 = -6x + 8 x+7=6x+8-x + 7 = -6x + 8

Step 2: Rearrange to isolate xx

Add 6x6x to both sides to bring all xx-terms to one side:

x+6x+7=8- x + 6x + 7 = 8 5x+7=85x + 7 = 8

Subtract 7 from both sides:

5x=15x = 1

Divide by 5:

x=15x = \frac{1}{5}


Final Answer:

The value of xx is not a clean value listed in the options, so this question seems invalid

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

Combining like terms
Distributive property

Theorems

Properties of equality

Suitable Grade Level

Grades 8-10