Respuesta :

nermay7

Answer: x=7

Step-by-step explanation:

8 + 4 = 2(x - 1)  combine like terms on the left  side  

12 = 2(x -1)    Distribute on the right side

12 = 2x - 2      Add 2 to both sides

+2         +2

14 = 2x     Divide both sides by 2

x= 7

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