3a-12a=15

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Solution for 3a-12a=15 equation: 


Simplifying
3a + -12a = 15

Combine like terms: 3a + -12a = -9a
-9a = 15

Solving
-9a = 15

Solving for variable 'a'.

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

Divide each side by '-9'.
a = -1.666666667

Simplifying
a = -1.666666667

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