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x/(9+x)=0.5
We simplify the equation to the form, which is simple to understand
x/(9+x)=0.5
Reorder the terms in parentheses
+( + 0.111111111111x+1)=0.5
Remove unnecessary parentheses
+ 0.111111111111x+1=0.5
We move all terms containing x to the left and all other terms to the right.
+ 0.111111111111x=0.5-1
We simplify left and right side of the equation.
+ 0.111111111111x=-0.5
We divide both sides of the equation by 0.111111111111 to get x.
x=-4.5
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