-9=9(-4+a)

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



-9=9(-4+a)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

9(a-4)

We multiply parentheses

9a-36

Back to the equation:

-(9a-36)



We get rid of parentheses

-9a+36-9=0

We add all the numbers together, and all the variables

-9a+27=0

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

-9a=-27

a=-27/-9

a=+3

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