Question

Find the value of the variable x in the equation x – 21 = 8. A. –13 B. 13 C. 29 D. –29

Answer 1

Answer:

C.  29

Step-by-step explanation:

x - 21 = 8      add 21 to both sides

x - 21 + 21 = 8 + 21

x = 29

Answer 2

Answer:

C. 29

Step-by-step explanation:

x – 21 = 8

Add 21 to each side to isolate x

x-21+21 = 8+21

x = 29