3y=15-30

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Solution for 3y=15-30 equation: 



3y=15-30

We move all terms to the left:

3y-(15-30)=0

We add all the numbers together, and all the variables

3y-(-15)=0

We add all the numbers together, and all the variables

3y+15=0

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

3y=-15

y=-15/3

y=-5

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