72=12a-12

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Solution for 72=12a-12 equation:


Simplifying
72 = 12a + -12

Reorder the terms:
72 = -12 + 12a

Solving
72 = -12 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
72 + -12a = -12 + 12a + -12a

Combine like terms: 12a + -12a = 0
72 + -12a = -12 + 0
72 + -12a = -12

Add '-72' to each side of the equation.
72 + -72 + -12a = -12 + -72

Combine like terms: 72 + -72 = 0
0 + -12a = -12 + -72
-12a = -12 + -72

Combine like terms: -12 + -72 = -84
-12a = -84

Divide each side by '-12'.
a = 7

Simplifying
a = 7

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