-31-a=4(4a+5)

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Solution for -31-a=4(4a+5) equation: 



-31-a=4(4a+5)

We move all terms to the left:

-31-a-(4(4a+5))=0

We add all the numbers together, and all the variables

-1a-(4(4a+5))-31=0



We calculate terms in parentheses: -(4(4a+5)), so:

4(4a+5)

We multiply parentheses

16a+20

Back to the equation:

-(16a+20)



We get rid of parentheses

-1a-16a-20-31=0

We add all the numbers together, and all the variables

-17a-51=0

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

-17a=51

a=51/-17

a=-3

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