5(-5/4y+15)+7y=21

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Solution for 5(-5/4y+15)+7y=21 equation: 



5(-5/4y+15)+7y=21

We move all terms to the left:

5(-5/4y+15)+7y-(21)=0



Domain of the equation: 4y+15)!=0

y∈R



We add all the numbers together, and all the variables

7y+5(-5/4y+15)-21=0

We multiply parentheses

7y-25y+75-21=0

We add all the numbers together, and all the variables

-18y+54=0

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

-18y=-54

y=-54/-18

y=+3

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