21y+7=-21

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Solution for 21y+7=-21 equation: 



21y+7=-21

We move all terms to the left:

21y+7-(-21)=0

We add all the numbers together, and all the variables

21y+28=0

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

21y=-28

y=-28/21

y=-1+1/3

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