-9y-7y=42

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Solution for -9y-7y=42 equation: 



-9y-7y=42

We move all terms to the left:

-9y-7y-(42)=0

We add all the numbers together, and all the variables

-16y-42=0

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

-16y=42

y=42/-16

y=-2+5/8

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