-4y+9=18-7y

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Solution for -4y+9=18-7y equation: 



-4y+9=18-7y

We move all terms to the left:

-4y+9-(18-7y)=0

We add all the numbers together, and all the variables

-4y-(-7y+18)+9=0

We get rid of parentheses

-4y+7y-18+9=0

We add all the numbers together, and all the variables

3y-9=0

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

3y=9

y=9/3

y=3

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