12(x-1)+18=42

Solution for 12(x-1)+18=42 equation:

Simplifying
12(x + -1) + 18 = 42

Reorder the terms:
12(-1 + x) + 18 = 42
(-1 * 12 + x * 12) + 18 = 42
(-12 + 12x) + 18 = 42

Reorder the terms:
-12 + 18 + 12x = 42

Combine like terms: -12 + 18 = 6
6 + 12x = 42

Solving
6 + 12x = 42

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 12x = 42 + -6

Combine like terms: 6 + -6 = 0
0 + 12x = 42 + -6
12x = 42 + -6

Combine like terms: 42 + -6 = 36
12x = 36

Divide each side by '12'.
x = 3

Simplifying
x = 3