4y-15=-21

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Solution for 4y-15=-21 equation: 



4y-15=-21

We move all terms to the left:

4y-15-(-21)=0

We add all the numbers together, and all the variables

4y+6=0

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

4y=-6

y=-6/4

y=-1+1/2

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