-9a-4a=30

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Solution for -9a-4a=30 equation: 



-9a-4a=30

We move all terms to the left:

-9a-4a-(30)=0

We add all the numbers together, and all the variables

-13a-30=0

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

-13a=30

a=30/-13

a=-2+4/13

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