-3(-4y+-7)=9

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Solution for -3(-4y+-7)=9 equation: 



-3(-4y+-7)=9

We move all terms to the left:

-3(-4y+-7)-(9)=0

We add all the numbers together, and all the variables

-3(-4y-7)-9=0

We multiply parentheses

12y+21-9=0

We add all the numbers together, and all the variables

12y+12=0

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

12y=-12

y=-12/12

y=-1

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