12m+6m+9a-3a=

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Solution for 12m+6m+9a-3a= equation:


Simplifying
12m + 6m + 9a + -3a = 0

Reorder the terms:
9a + -3a + 12m + 6m = 0

Combine like terms: 9a + -3a = 6a
6a + 12m + 6m = 0

Combine like terms: 12m + 6m = 18m
6a + 18m = 0

Solving
6a + 18m = 0

Solving for variable 'a'.

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

Add '-18m' to each side of the equation.
6a + 18m + -18m = 0 + -18m

Combine like terms: 18m + -18m = 0
6a + 0 = 0 + -18m
6a = 0 + -18m
Remove the zero:
6a = -18m

Divide each side by '6'.
a = -3m

Simplifying
a = -3m

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