9=-3x-1-7

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Solution for 9=-3x-1-7 equation: 



9=-3x-1-7

We move all terms to the left:

9-(-3x-1-7)=0

We add all the numbers together, and all the variables

-(-3x-8)+9=0

We get rid of parentheses

3x+8+9=0

We add all the numbers together, and all the variables

3x+17=0

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

3x=-17

x=-17/3

x=-5+2/3

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