13-21y=15+25y

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Solution for 13-21y=15+25y equation: 



13-21y=15+25y

We move all terms to the left:

13-21y-(15+25y)=0

We add all the numbers together, and all the variables

-21y-(25y+15)+13=0

We get rid of parentheses

-21y-25y-15+13=0

We add all the numbers together, and all the variables

-46y-2=0

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

-46y=2

y=2/-46

y=-1/23

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