90=7(8+x)

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Solution for 90=7(8+x) equation: 



90=7(8+x)

We move all terms to the left:

90-(7(8+x))=0

We add all the numbers together, and all the variables

-(7(x+8))+90=0



We calculate terms in parentheses: -(7(x+8)), so:

7(x+8)

We multiply parentheses

7x+56

Back to the equation:

-(7x+56)



We get rid of parentheses

-7x-56+90=0

We add all the numbers together, and all the variables

-7x+34=0

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

-7x=-34

x=-34/-7

x=4+6/7

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