7(3-x)-12=72

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


Simplifying
7(3 + -1x) + -12 = 72
(3 * 7 + -1x * 7) + -12 = 72
(21 + -7x) + -12 = 72

Reorder the terms:
21 + -12 + -7x = 72

Combine like terms: 21 + -12 = 9
9 + -7x = 72

Solving
9 + -7x = 72

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -7x = 72 + -9

Combine like terms: 9 + -9 = 0
0 + -7x = 72 + -9
-7x = 72 + -9

Combine like terms: 72 + -9 = 63
-7x = 63

Divide each side by '-7'.
x = -9

Simplifying
x = -9

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