a-12=3a+6

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Solution for a-12=3a+6 equation:


Simplifying
a + -12 = 3a + 6

Reorder the terms:
-12 + a = 3a + 6

Reorder the terms:
-12 + a = 6 + 3a

Solving
-12 + a = 6 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-12 + a + -3a = 6 + 3a + -3a

Combine like terms: a + -3a = -2a
-12 + -2a = 6 + 3a + -3a

Combine like terms: 3a + -3a = 0
-12 + -2a = 6 + 0
-12 + -2a = 6

Add '12' to each side of the equation.
-12 + 12 + -2a = 6 + 12

Combine like terms: -12 + 12 = 0
0 + -2a = 6 + 12
-2a = 6 + 12

Combine like terms: 6 + 12 = 18
-2a = 18

Divide each side by '-2'.
a = -9

Simplifying
a = -9

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