15-4y=-21-

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Solution for 15-4y=-21- equation: 



15-4y=-21-

We move all terms to the left:

15-4y-(-21-)=0

We add all the numbers together, and all the variables

-4y+15-0=0

We add all the numbers together, and all the variables

-4y+15=0

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

-4y=-15

y=-15/-4

y=3+3/4

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