7y+9=12

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Solution for 7y+9=12 equation: 



7y+9=12

We move all terms to the left:

7y+9-(12)=0

We add all the numbers together, and all the variables

7y-3=0

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

7y=3

y=3/7

y=3/7

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