7y+5=3y-15

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Solution for 7y+5=3y-15 equation: 



7y+5=3y-15

We move all terms to the left:

7y+5-(3y-15)=0

We get rid of parentheses

7y-3y+15+5=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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