72=7x+5x(3-12)

Solution for 72=7x+5x(3-12) equation:

Simplifying
72 = 7x + 5x(3 + -12)

Combine like terms: 3 + -12 = -9
72 = 7x + 5x(-9)

Reorder the terms for easier multiplication:
72 = 7x + 5 * -9x

Multiply 5 * -9
72 = 7x + -45x

Combine like terms: 7x + -45x = -38x
72 = -38x

Solving
72 = -38x

Solving for variable 'x'.

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

Add '38x' to each side of the equation.
72 + 38x = -38x + 38x

Combine like terms: -38x + 38x = 0
72 + 38x = 0

Add '-72' to each side of the equation.
72 + -72 + 38x = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 38x = 0 + -72
38x = 0 + -72

Combine like terms: 0 + -72 = -72
38x = -72

Divide each side by '38'.
x = -1.894736842

Simplifying
x = -1.894736842