-4-a=17

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Solution for -4-a=17 equation: 



-4-a=17

We move all terms to the left:

-4-a-(17)=0

We add all the numbers together, and all the variables

-1a-21=0

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

-a=21

a=21/-1

a=-21

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