-20-7a=3(9a+4)

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Solution for -20-7a=3(9a+4) equation: 



-20-7a=3(9a+4)

We move all terms to the left:

-20-7a-(3(9a+4))=0



We calculate terms in parentheses: -(3(9a+4)), so:

3(9a+4)

We multiply parentheses

27a+12

Back to the equation:

-(27a+12)



We get rid of parentheses

-7a-27a-12-20=0

We add all the numbers together, and all the variables

-34a-32=0

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

-34a=32

a=32/-34

a=-16/17

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