8a-12=84

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Solution for 8a-12=84 equation: 


Simplifying
8a + -12 = 84

Reorder the terms:
-12 + 8a = 84

Solving
-12 + 8a = 84

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 8a = 84 + 12

Combine like terms: -12 + 12 = 0
0 + 8a = 84 + 12
8a = 84 + 12

Combine like terms: 84 + 12 = 96
8a = 96

Divide each side by '8'.
a = 12

Simplifying
a = 12

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