3a-12=-3

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Solution for 3a-12=-3 equation: 


Simplifying
3a + -12 = -3

Reorder the terms:
-12 + 3a = -3

Solving
-12 + 3a = -3

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 + 3a = -3 + 12

Combine like terms: -12 + 12 = 0
0 + 3a = -3 + 12
3a = -3 + 12

Combine like terms: -3 + 12 = 9
3a = 9

Divide each side by '3'.
a = 3

Simplifying
a = 3

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