3y=9y+18

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Solution for 3y=9y+18 equation: 



3y=9y+18

We move all terms to the left:

3y-(9y+18)=0

We get rid of parentheses

3y-9y-18=0

We add all the numbers together, and all the variables

-6y-18=0

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

-6y=18

y=18/-6

y=-3

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