2y+21=9y+-45

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Solution for 2y+21=9y+-45 equation: 



2y+21=9y+-45

We move all terms to the left:

2y+21-(9y+-45)=0

We add all the numbers together, and all the variables

2y-(9y-45)+21=0

We get rid of parentheses

2y-9y+45+21=0

We add all the numbers together, and all the variables

-7y+66=0

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

-7y=-66

y=-66/-7

y=9+3/7

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