-12a=15-15a

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Solution for -12a=15-15a equation: 


Simplifying
-12a = 15 + -15a

Solving
-12a = 15 + -15a

Solving for variable 'a'.

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

Add '15a' to each side of the equation.
-12a + 15a = 15 + -15a + 15a

Combine like terms: -12a + 15a = 3a
3a = 15 + -15a + 15a

Combine like terms: -15a + 15a = 0
3a = 15 + 0
3a = 15

Divide each side by '3'.
a = 5

Simplifying
a = 5

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