28-y-3y=12

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Solution for 28-y-3y=12 equation: 



28-y-3y=12

We move all terms to the left:

28-y-3y-(12)=0

We add all the numbers together, and all the variables

-4y+16=0

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

-4y=-16

y=-16/-4

y=+4

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