-12a-45=-9a

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


Simplifying
-12a + -45 = -9a

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

Solving
-45 + -12a = -9a

Solving for variable 'a'.

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

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

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

Combine like terms: -9a + 9a = 0
-45 + -3a = 0

Add '45' to each side of the equation.
-45 + 45 + -3a = 0 + 45

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

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

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

Simplifying
a = -15

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