y-2y=30

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Solution for y-2y=30 equation: 



y-2y=30

We move all terms to the left:

y-2y-(30)=0

We add all the numbers together, and all the variables

-1y-30=0

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

-y=30

y=30/-1

y=-30

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