30=18-4y

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Solution for 30=18-4y equation: 



30=18-4y

We move all terms to the left:

30-(18-4y)=0

We add all the numbers together, and all the variables

-(-4y+18)+30=0

We get rid of parentheses

4y-18+30=0

We add all the numbers together, and all the variables

4y+12=0

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

4y=-12

y=-12/4

y=-3

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