-57+21y+9=5(5y-4)-8

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Solution for -57+21y+9=5(5y-4)-8 equation: 



-57+21y+9=5(5y-4)-8

We move all terms to the left:

-57+21y+9-(5(5y-4)-8)=0

We add all the numbers together, and all the variables

21y-(5(5y-4)-8)-48=0



We calculate terms in parentheses: -(5(5y-4)-8), so:

5(5y-4)-8

We multiply parentheses

25y-20-8

We add all the numbers together, and all the variables

25y-28

Back to the equation:

-(25y-28)



We get rid of parentheses

21y-25y+28-48=0

We add all the numbers together, and all the variables

-4y-20=0

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

-4y=20

y=20/-4

y=-5

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