Respuesta :
Answer:
7.
Step-by-step explanation:
8 + 4 = 2(x - 1)
2(x - 1) = 12
x - 1 = 6
x = 7.
Answer:x=7
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
8+4==2(x-1)
8+4=(2)(x)+(2)(-1)(Distribute)
8+4=2x+-2
(8+4)=2x-2(combine like terms)
12=2x-2
Step 2: flip the equation
2x-2=12
Step 3: Add 2 to both sides.
2x-2+2=12+2
2x=14
Step 4: Divide both sides by 2.
2x/2=14/2
X=7
Hope it helps
