-4a+12+6a=5a-9a

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Solution for -4a+12+6a=5a-9a equation:


Simplifying
-4a + 12 + 6a = 5a + -9a

Reorder the terms:
12 + -4a + 6a = 5a + -9a

Combine like terms: -4a + 6a = 2a
12 + 2a = 5a + -9a

Combine like terms: 5a + -9a = -4a
12 + 2a = -4a

Solving
12 + 2a = -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 + 2a + 4a = -4a + 4a

Combine like terms: 2a + 4a = 6a
12 + 6a = -4a + 4a

Combine like terms: -4a + 4a = 0
12 + 6a = 0

Add '-12' to each side of the equation.
12 + -12 + 6a = 0 + -12

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

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

Divide each side by '6'.
a = -2

Simplifying
a = -2

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