-12=5a-a

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Solution for -12=5a-a equation:


Simplifying
-12 = 5a + -1a

Combine like terms: 5a + -1a = 4a
-12 = 4a

Solving
-12 = 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-12 + -4a = 4a + -4a

Combine like terms: 4a + -4a = 0
-12 + -4a = 0

Add '12' to each side of the equation.
-12 + 12 + -4a = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -4a = 0 + 12
-4a = 0 + 12

Combine like terms: 0 + 12 = 12
-4a = 12

Divide each side by '-4'.
a = -3

Simplifying
a = -3

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