7+7y+9y=-15

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



7+7y+9y=-15

We move all terms to the left:

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

We add all the numbers together, and all the variables

16y+22=0

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

16y=-22

y=-22/16

y=-1+3/8

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