7y-2y+4y=9

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Solution for 7y-2y+4y=9 equation: 



7y-2y+4y=9

We move all terms to the left:

7y-2y+4y-(9)=0

We add all the numbers together, and all the variables

9y-9=0

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

9y=9

y=9/9

y=1

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