7y-9=4y+-15

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Solution for 7y-9=4y+-15 equation: 



7y-9=4y+-15

We move all terms to the left:

7y-9-(4y+-15)=0

We add all the numbers together, and all the variables

7y-(4y-15)-9=0

We get rid of parentheses

7y-4y+15-9=0

We add all the numbers together, and all the variables

3y+6=0

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

3y=-6

y=-6/3

y=-2

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