30-y-4y=40

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Solution for 30-y-4y=40 equation: 



30-y-4y=40

We move all terms to the left:

30-y-4y-(40)=0

We add all the numbers together, and all the variables

-5y-10=0

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

-5y=10

y=10/-5

y=-2

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