-3y-4y=9-y

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Solution for -3y-4y=9-y equation: 



-3y-4y=9-y

We move all terms to the left:

-3y-4y-(9-y)=0

We add all the numbers together, and all the variables

-3y-4y-(-1y+9)=0

We add all the numbers together, and all the variables

-7y-(-1y+9)=0

We get rid of parentheses

-7y+1y-9=0

We add all the numbers together, and all the variables

-6y-9=0

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

-6y=9

y=9/-6

y=-1+1/2

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