3y-21=-7+12

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Solution for 3y-21=-7+12 equation: 



3y-21=-7+12

We move all terms to the left:

3y-21-(-7+12)=0

We add all the numbers together, and all the variables

3y-21-5=0

We add all the numbers together, and all the variables

3y-26=0

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

3y=26

y=26/3

y=8+2/3

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