18y-21=15y+13

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Solution for 18y-21=15y+13 equation: 



18y-21=15y+13

We move all terms to the left:

18y-21-(15y+13)=0

We get rid of parentheses

18y-15y-13-21=0

We add all the numbers together, and all the variables

3y-34=0

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

3y=34

y=34/3

y=11+1/3

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