21y-15=21

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Solution for 21y-15=21 equation: 



21y-15=21

We move all terms to the left:

21y-15-(21)=0

We add all the numbers together, and all the variables

21y-36=0

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

21y=36

y=36/21

y=1+5/7

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