8(-1-x)=9(-x-1)

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Solution for 8(-1-x)=9(-x-1) equation: 



8(-1-x)=9(-x-1)

We move all terms to the left:

8(-1-x)-(9(-x-1))=0

We add all the numbers together, and all the variables

8(-1x-1)-(9(-1x-1))=0

We multiply parentheses

-8x-(9(-1x-1))-8=0



We calculate terms in parentheses: -(9(-1x-1)), so:

9(-1x-1)

We multiply parentheses

-9x-9

Back to the equation:

-(-9x-9)



We get rid of parentheses

-8x+9x+9-8=0

We add all the numbers together, and all the variables

x+1=0

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

x=-1

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