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18/(-x)=9
We move all terms to the left:
18/(-x)-(9)=0
Domain of the equation: (-x)!=0We add all the numbers together, and all the variables
x!=0/-1
x!=0
x∈R
18/(-1x)-9=0
We multiply all the terms by the denominator
-9*(-1x)+18=0
We multiply parentheses
9x+18=0
We move all terms containing x to the left, all other terms to the right
9x=-18
x=-18/9
x=-2
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