30-2y=42

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Solution for 30-2y=42 equation: 



30-2y=42

We move all terms to the left:

30-2y-(42)=0

We add all the numbers together, and all the variables

-2y-12=0

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

-2y=12

y=12/-2

y=-6

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