-2a-3=a-12

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Solution for -2a-3=a-12 equation:


Simplifying
-2a + -3 = a + -12

Reorder the terms:
-3 + -2a = a + -12

Reorder the terms:
-3 + -2a = -12 + a

Solving
-3 + -2a = -12 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-3 + -2a + -1a = -12 + a + -1a

Combine like terms: -2a + -1a = -3a
-3 + -3a = -12 + a + -1a

Combine like terms: a + -1a = 0
-3 + -3a = -12 + 0
-3 + -3a = -12

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

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

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

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

Simplifying
a = 3

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