9(-9-x)=-1

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Solution for 9(-9-x)=-1 equation: 



9(-9-x)=-1

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

9(-1x-9)+1=0

We multiply parentheses

-9x-81+1=0

We add all the numbers together, and all the variables

-9x-80=0

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

-9x=80

x=80/-9

x=-8+8/9

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