-5a-4a=-9

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Solution for -5a-4a=-9 equation: 


Simplifying
-5a + -4a = -9

Combine like terms: -5a + -4a = -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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