-7=-5y+4(-y+9)-7(+3y)

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Solution for -7=-5y+4(-y+9)-7(+3y) equation: 



-7=-5y+4(-y+9)-7(+3y)

We move all terms to the left:

-7-(-5y+4(-y+9)-7(+3y))=0

We add all the numbers together, and all the variables

-(-5y+4(-1y+9)-7(+3y))-7=0



We calculate terms in parentheses: -(-5y+4(-1y+9)-7(+3y)), so:

-5y+4(-1y+9)-7(+3y)

We multiply parentheses

-5y-4y-21y+36

We add all the numbers together, and all the variables

-30y+36

Back to the equation:

-(-30y+36)



We get rid of parentheses

30y-36-7=0

We add all the numbers together, and all the variables

30y-43=0

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

30y=43

y=43/30

y=1+13/30

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