-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 = 15
-3a = 15

Divide each side by '-3'.
a = -5

Simplifying
a = -5

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