7y-9=-2y+72

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Solution for 7y-9=-2y+72 equation: 



7y-9=-2y+72

We move all terms to the left:

7y-9-(-2y+72)=0

We get rid of parentheses

7y+2y-72-9=0

We add all the numbers together, and all the variables

9y-81=0

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

9y=81

y=81/9

y=9

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