Question

Solve the equation: 3(x + 5) = x + 21
A. 3
B. 6
C. -13
D. 8

Answer 1

A. 3

Explanation:

3(x+5)=x+21

3x+15=x+21

3x=x+6

2x=6

x=3

Answer 2

A

Explanation:

1. Plug in the numbers: 3 (3+5) = 3+21

2. Use PEMDAS (Order of Operations) to solve:

3 (8) = 24

24 = 24.