We solve this equation by isolating x. We first go about subtracting 4 from both sides
2(x + 1) + 4 = 8
2(x + 1) + 4-4 = 8-4
2(x+1) = 4
We divide both sides of the equation by 2 so that the 2 over the parentheses cancels out to become a 1.
2(x+1) = 4
2(x+1)/2 = 4/2
x+1 = 2
Subtract 1 from both sides
x = 1
The answer is x = 1 as that is the value that will make the equation true. If you substitute x = 1 in for x, you will get
2(1 + 1) + 4 = 8
2(2) + 4 = 8
4 + 4 = 8
8= 8
and that is a true equation.
