15y-9y=-20

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Solution for 15y-9y=-20 equation: 



15y-9y=-20

We move all terms to the left:

15y-9y-(-20)=0

We add all the numbers together, and all the variables

6y+20=0

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

6y=-20

y=-20/6

y=-3+1/3

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