-7a-9=-4

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Solution for -7a-9=-4 equation: 



-7a-9=-4

We move all terms to the left:

-7a-9-(-4)=0

We add all the numbers together, and all the variables

-7a-5=0

We move all terms containing a to the left, all other terms to the right

-7a=5

a=5/-7

a=-5/7

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