3y-9+4y=7

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Solution for 3y-9+4y=7 equation: 



3y-9+4y=7

We move all terms to the left:

3y-9+4y-(7)=0

We add all the numbers together, and all the variables

7y-16=0

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

7y=16

y=16/7

y=2+2/7

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