-2a-7a=9

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Solution for -2a-7a=9 equation: 


Simplifying
-2a + -7a = 9

Combine like terms: -2a + -7a = -9a
-9a = 9

Solving
-9a = 9

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

Simplifying
a = -1

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