7y-8=21

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Solution for 7y-8=21 equation: 



7y-8=21

We move all terms to the left:

7y-8-(21)=0

We add all the numbers together, and all the variables

7y-29=0

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

7y=29

y=29/7

y=4+1/7

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