-3y-4=-21

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Solution for -3y-4=-21 equation: 



-3y-4=-21

We move all terms to the left:

-3y-4-(-21)=0

We add all the numbers together, and all the variables

-3y+17=0

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

-3y=-17

y=-17/-3

y=5+2/3

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