2(z-1)+3=12

Solution for 2(z-1)+3=12 equation:

Simplifying
2(z + -1) + 3 = 12

Reorder the terms:
2(-1 + z) + 3 = 12
(-1 * 2 + z * 2) + 3 = 12
(-2 + 2z) + 3 = 12

Reorder the terms:
-2 + 3 + 2z = 12

Combine like terms: -2 + 3 = 1
1 + 2z = 12

Solving
1 + 2z = 12

Solving for variable 'z'.

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

Add '-1' to each side of the equation.
1 + -1 + 2z = 12 + -1

Combine like terms: 1 + -1 = 0
0 + 2z = 12 + -1
2z = 12 + -1

Combine like terms: 12 + -1 = 11
2z = 11

Divide each side by '2'.
z = 5.5

Simplifying
z = 5.5