-2(-4y+-9)=42

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Solution for -2(-4y+-9)=42 equation: 



-2(-4y+-9)=42

We move all terms to the left:

-2(-4y+-9)-(42)=0

We add all the numbers together, and all the variables

-2(-4y-9)-42=0

We multiply parentheses

8y+18-42=0

We add all the numbers together, and all the variables

8y-24=0

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

8y=24

y=24/8

y=3

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