4a-12+9=9a+6-2a

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Solution for 4a-12+9=9a+6-2a equation:


Simplifying
4a + -12 + 9 = 9a + 6 + -2a

Reorder the terms:
-12 + 9 + 4a = 9a + 6 + -2a

Combine like terms: -12 + 9 = -3
-3 + 4a = 9a + 6 + -2a

Reorder the terms:
-3 + 4a = 6 + 9a + -2a

Combine like terms: 9a + -2a = 7a
-3 + 4a = 6 + 7a

Solving
-3 + 4a = 6 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
-3 + 4a + -7a = 6 + 7a + -7a

Combine like terms: 4a + -7a = -3a
-3 + -3a = 6 + 7a + -7a

Combine like terms: 7a + -7a = 0
-3 + -3a = 6 + 0
-3 + -3a = 6

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

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

Combine like terms: 6 + 3 = 9
-3a = 9

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

Simplifying
a = -3

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