6a-12=78

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Solution for 6a-12=78 equation: 


Simplifying
6a + -12 = 78

Reorder the terms:
-12 + 6a = 78

Solving
-12 + 6a = 78

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 + 6a = 78 + 12

Combine like terms: -12 + 12 = 0
0 + 6a = 78 + 12
6a = 78 + 12

Combine like terms: 78 + 12 = 90
6a = 90

Divide each side by '6'.
a = 15

Simplifying
a = 15

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