Set 4: Linear Equations (Beginner)

**Choice D is the best answer.** Solve step by step: x = 5

Explanation

Answer: D

PROBLEM

Solve for x: 7x - 4 = 31

✓ Correct

Detailed Explanation

Choice D is the best answer. Solve step by step: x = 5

Why others are wrong:

A: 7 is incorrect because it does not satisfy the equation.

B: 6 is incorrect because it does not satisfy the equation.

C: 3 is incorrect because it does not satisfy the equation.