3y-1=2*12-4

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Solution for 3y-1=2*12-4 equation: 



3y-1=2*12-4

We move all terms to the left:

3y-1-(2*12-4)=0

We add all the numbers together, and all the variables

3y-1-20=0

We add all the numbers together, and all the variables

3y-21=0

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

3y=21

y=21/3

y=7

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