Question

Solve x – 5 = 16 for x.
Question 17 options:

A)

x = –11

B)

x = 11

C)

x = 21

D)

x = 16

Answer 1

Get x all alone on its own side:
x=16+5
x=21

Answer 2

Answer:

$x - 5 = 16 \\ x = 16 + 5 \\ \boxed{ x = 21}$

C) x=21 is the right answer.