3(x+5)-12=0

Solution for 3(x+5)-12=0 equation:

Simplifying
3(x + 5) + -12 = 0

Reorder the terms:
3(5 + x) + -12 = 0
(5 * 3 + x * 3) + -12 = 0
(15 + 3x) + -12 = 0

Reorder the terms:
15 + -12 + 3x = 0

Combine like terms: 15 + -12 = 3
3 + 3x = 0

Solving
3 + 3x = 0

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 3x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 3x = 0 + -3
3x = 0 + -3

Combine like terms: 0 + -3 = -3
3x = -3

Divide each side by '3'.
x = -1

Simplifying
x = -1