what is x in the equation 5+2(x-1)=12

Question

I need help with this equation please.

Answer 1

Simplifying
5 + -2[x + -1] = 12

Reorder the terms:
5 + -2[-1 + x] = 12
5 + [-1 * -2 + x * -2] = 12
5 + [2 + -2x] = 12

Combine like terms: 5 + 2 = 7
7 + -2x = 12

Solving
7 + -2x = 12

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + -2x = 12 + -7

Combine like terms: 7 + -7 = 0
0 + -2x = 12 + -7
-2x = 12 + -7

Combine like terms: 12 + -7 = 5
-2x = 5

Divide each side by '-2'.
x = -2.5

Simplifying
x = -2.5