12-3a=-18

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Solution for 12-3a=-18 equation:


Simplifying
12 + -3a = -18

Solving
12 + -3a = -18

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 = -18 + -12

Combine like terms: 12 + -12 = 0
0 + -3a = -18 + -12
-3a = -18 + -12

Combine like terms: -18 + -12 = -30
-3a = -30

Divide each side by '-3'.
a = 10

Simplifying
a = 10

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