3(-9-7x)=15

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Solution for 3(-9-7x)=15 equation: 



3(-9-7x)=15

We move all terms to the left:

3(-9-7x)-(15)=0

We add all the numbers together, and all the variables

3(-7x-9)-15=0

We multiply parentheses

-21x-27-15=0

We add all the numbers together, and all the variables

-21x-42=0

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

-21x=42

x=42/-21

x=-2

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