7y-9=9y-3y

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Solution for 7y-9=9y-3y equation: 



7y-9=9y-3y

We move all terms to the left:

7y-9-(9y-3y)=0

We add all the numbers together, and all the variables

7y-(+6y)-9=0

We get rid of parentheses

7y-6y-9=0

We add all the numbers together, and all the variables

y-9=0

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

y=9

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