13=(-8)+7y

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Solution for 13=(-8)+7y equation: 



13=(-8)+7y

We move all terms to the left:

13-((-8)+7y)=0



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

(-8)+7y

determiningTheFunctionDomain
7y+(-8)

We add all the numbers together, and all the variables

7y-8

Back to the equation:

-(7y-8)



We get rid of parentheses

-7y+8+13=0

We add all the numbers together, and all the variables

-7y+21=0

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

-7y=-21

y=-21/-7

y=+3

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