Set 3: Linear Equations (Advanced)

**Choice C is the best answer.** Solve step by step: x = 7

Explanation

Answer: C

PROBLEM

Solve for x: 4(x + 3) = 40

✓ Correct

Detailed Explanation

Choice C is the best answer. Solve step by step: x = 7

Why others are wrong:

A: 14 is incorrect because it does not satisfy the equation.

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

D: 9 is incorrect because it does not satisfy the equation.