Set 4: Linear Equations (Beginner)

**Choice D is the best answer.** Solve step by step: x = 3

Explanation

Answer: D

PROBLEM

Solve for x: 8x + 7 = 31

✓ Correct

Detailed Explanation

Choice D is the best answer. Solve step by step: x = 3

Why others are wrong:

A: 1 is incorrect because it does not satisfy the equation.

B: 4 is incorrect because it does not satisfy the equation.

C: 2 is incorrect because it does not satisfy the equation.