18y-21=15+3

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Solution for 18y-21=15+3 equation: 



18y-21=15+3

We move all terms to the left:

18y-21-(15+3)=0

We add all the numbers together, and all the variables

18y-21-18=0

We add all the numbers together, and all the variables

18y-39=0

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

18y=39

y=39/18

y=2+1/6

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