7x+13=(x-9)+(7x+4)

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Solution for 7x+13=(x-9)+(7x+4) equation: 



7x+13=(x-9)+(7x+4)

We move all terms to the left:

7x+13-((x-9)+(7x+4))=0



We calculate terms in parentheses: -((x-9)+(7x+4)), so:

(x-9)+(7x+4)

We get rid of parentheses

x+7x-9+4

We add all the numbers together, and all the variables

8x-5

Back to the equation:

-(8x-5)



We get rid of parentheses

7x-8x+5+13=0

We add all the numbers together, and all the variables

-1x+18=0

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

-x=-18

x=-18/-1

x=+18

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