-4a+12+9a=5a-3a

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Solution for -4a+12+9a=5a-3a equation:


Simplifying
-4a + 12 + 9a = 5a + -3a

Reorder the terms:
12 + -4a + 9a = 5a + -3a

Combine like terms: -4a + 9a = 5a
12 + 5a = 5a + -3a

Combine like terms: 5a + -3a = 2a
12 + 5a = 2a

Solving
12 + 5a = 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
12 + 5a + -2a = 2a + -2a

Combine like terms: 5a + -2a = 3a
12 + 3a = 2a + -2a

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

Add '-12' to each side of the equation.
12 + -12 + 3a = 0 + -12

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

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

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

Simplifying
a = -4

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