-21=5y-1

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Solution for -21=5y-1 equation: 



-21=5y-1

We move all terms to the left:

-21-(5y-1)=0

We get rid of parentheses

-5y+1-21=0

We add all the numbers together, and all the variables

-5y-20=0

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

-5y=20

y=20/-5

y=-4

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