9=(4+7a)

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



9=(4+7a)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -((7a+4)), so:

(7a+4)

We get rid of parentheses

7a+4

Back to the equation:

-(7a+4)



We get rid of parentheses

-7a-4+9=0

We add all the numbers together, and all the variables

-7a+5=0

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

-7a=-5

a=-5/-7

a=5/7

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