85y=21(4y+15)

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Solution for 85y=21(4y+15) equation: 



85y=21(4y+15)

We move all terms to the left:

85y-(21(4y+15))=0



We calculate terms in parentheses: -(21(4y+15)), so:

21(4y+15)

We multiply parentheses

84y+315

Back to the equation:

-(84y+315)



We get rid of parentheses

85y-84y-315=0

We add all the numbers together, and all the variables

y-315=0

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

y=315

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