Question

Question 3 (1 point)

What is the value of x in the equation 8+4 = 2(x - 1)?
a
11/2
b
13/2
c
5
d
7

Answer 1

Answer is D

12 = 2x - 2

14 = 2x

14/2 = x

7 = x

Answer 2

D. 7

Explanation:

(8+4) = 2(x-1) multiply (x-1) by 2

(8+4) = 2x-2 add 8 and 4

12 = 2x-2 add 2 on both sides

14 = 2x divide both sides by 2

7 = x