-45=2y-7y

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Solution for -45=2y-7y equation: 



-45=2y-7y

We move all terms to the left:

-45-(2y-7y)=0

We add all the numbers together, and all the variables

-(-5y)-45=0

We get rid of parentheses

5y-45=0

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

5y=45

y=45/5

y=9

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