5y=4(10y+21)

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Solution for 5y=4(10y+21) equation: 



5y=4(10y+21)

We move all terms to the left:

5y-(4(10y+21))=0



We calculate terms in parentheses: -(4(10y+21)), so:

4(10y+21)

We multiply parentheses

40y+84

Back to the equation:

-(40y+84)



We get rid of parentheses

5y-40y-84=0

We add all the numbers together, and all the variables

-35y-84=0

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

-35y=84

y=84/-35

y=-2+2/5

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