Question

What is the value of z in the equation 2(4z -9 -7) = 166 -46?

A. 19
B. 21
C. 26
D. 34

10 points for the answer.

Answer 1

A. 19

Explanation:

2(4z -9 -7) = 166 -46

First combine like terms

2(4z -16) = 120

Divide each side by 2

2/2(4z -16) = 120/2

4z-16=60

Add 16 to each side

4z-16+16 = 60+16

4z = 76

Divide each side by 4

4z/4 = 76/4

z = 19