Respuesta :

Answer:

x= 7

Step-by-step explanation:

The equation is 8+4= 2(x-1)

Distribute into the parenthesis.

8+4= 2x-2

Now, add.

12= 2x-2

Add 2 to both sides.

12= 2x-2

+2       +2

Then, divide by 2 to both sides to isolate the variable.

14= 2x

2    2

x=7

Answer:

7

Step-by-step explanation: