21=-5y+6

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Solution for 21=-5y+6 equation: 



21=-5y+6

We move all terms to the left:

21-(-5y+6)=0

We get rid of parentheses

5y-6+21=0

We add all the numbers together, and all the variables

5y+15=0

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

5y=-15

y=-15/5

y=-3

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