21y-7=40

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Solution for 21y-7=40 equation: 



21y-7=40

We move all terms to the left:

21y-7-(40)=0

We add all the numbers together, and all the variables

21y-47=0

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

21y=47

y=47/21

y=2+5/21

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