12=-84+12a

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Solution for 12=-84+12a equation:


Simplifying
12 = -84 + 12a

Solving
12 = -84 + 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.
12 + -12a = -84 + 12a + -12a

Combine like terms: 12a + -12a = 0
12 + -12a = -84 + 0
12 + -12a = -84

Add '-12' to each side of the equation.
12 + -12 + -12a = -84 + -12

Combine like terms: 12 + -12 = 0
0 + -12a = -84 + -12
-12a = -84 + -12

Combine like terms: -84 + -12 = -96
-12a = -96

Divide each side by '-12'.
a = 8

Simplifying
a = 8

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