What is the value of x in the equation 8 + 4 = 2 (x - 1) ?

a. 7

b. 5

c. 11/2

d. 13/2

A. 7

Step-by-step explanation:

We already know that 8+4 = 12, So now we have to find out how to make the equation equal 12.

2*6 = 12, we have to find out what x will be in order to make the equation true.

2 (7-1) = 2 (6) = 12. Substitute the 7 for x.

x = 7