-4a-a=15

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Solution for -4a-a=15 equation: 



-4a-a=15

We move all terms to the left:

-4a-a-(15)=0

We add all the numbers together, and all the variables

-5a-15=0

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

-5a=15

a=15/-5

a=-3

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