-n-9=9+n

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Solution for -n-9=9+n equation:



-n-9=9+n
We move all terms to the left:
-n-9-(9+n)=0
We add all the numbers together, and all the variables
-n-(n+9)-9=0
We add all the numbers together, and all the variables
-1n-(n+9)-9=0
We get rid of parentheses
-1n-n-9-9=0
We add all the numbers together, and all the variables
-2n-18=0
We move all terms containing n to the left, all other terms to the right
-2n=18
n=18/-2
n=-9

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