-3a-6a=-18

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Solution for -3a-6a=-18 equation: 


Simplifying
-3a + -6a = -18

Combine like terms: -3a + -6a = -9a
-9a = -18

Solving
-9a = -18

Solving for variable 'a'.

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

Divide each side by '-9'.
a = 2

Simplifying
a = 2

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