21y-1=12.2

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Solution for 21y-1=12.2 equation: 



21y-1=12.2

We move all terms to the left:

21y-1-(12.2)=0

We add all the numbers together, and all the variables

21y-13.2=0

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

21y=13.2

y=13.2/21

y=11/17.5

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