9+-1+x=2x+1

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Solution for 9+-1+x=2x+1 equation: 



9+-1+x=2x+1

We move all terms to the left:

9+-1+x-(2x+1)=0

We add all the numbers together, and all the variables

x-(2x+1)=0

We get rid of parentheses

x-2x-1=0

We add all the numbers together, and all the variables

-1x-1=0

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

-x=1

x=1/-1

x=-1

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