-9a=-12a-45

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Solution for -9a=-12a-45 equation: 


Simplifying
-9a = -12a + -45

Reorder the terms:
-9a = -45 + -12a

Solving
-9a = -45 + -12a

Solving for variable 'a'.

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

Add '12a' to each side of the equation.
-9a + 12a = -45 + -12a + 12a

Combine like terms: -9a + 12a = 3a
3a = -45 + -12a + 12a

Combine like terms: -12a + 12a = 0
3a = -45 + 0
3a = -45

Divide each side by '3'.
a = -15

Simplifying
a = -15

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