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\frac{1}{1+\frac{1}{\frac{x}{x}+\frac{1}{x}}}\leq 1
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x}{x}.
\frac{1}{1+\frac{1}{\frac{x+1}{x}}}\leq 1
Since \frac{x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.
\frac{1}{1+\frac{x}{x+1}}\leq 1
Variable x cannot be equal to 0 since division by zero is not defined. Divide 1 by \frac{x+1}{x} by multiplying 1 by the reciprocal of \frac{x+1}{x}.
\frac{1}{\frac{x+1}{x+1}+\frac{x}{x+1}}\leq 1
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x+1}{x+1}.
\frac{1}{\frac{x+1+x}{x+1}}\leq 1
Since \frac{x+1}{x+1} and \frac{x}{x+1} have the same denominator, add them by adding their numerators.
\frac{1}{\frac{2x+1}{x+1}}\leq 1
Combine like terms in x+1+x.
\frac{x+1}{2x+1}\leq 1
Variable x cannot be equal to -1 since division by zero is not defined. Divide 1 by \frac{2x+1}{x+1} by multiplying 1 by the reciprocal of \frac{2x+1}{x+1}.
2x+1>0 2x+1<0
Denominator 2x+1 cannot be zero since division by zero is not defined. There are two cases.
2x>-1
Consider the case when 2x+1 is positive. Move 1 to the right hand side.
x>-\frac{1}{2}
Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
x+1\leq 2x+1
The initial inequality does not change the direction when multiplied by 2x+1 for 2x+1>0.
x-2x\leq -1+1
Move the terms containing x to the left hand side and all other terms to the right hand side.
-x\leq 0
Combine like terms.
x\geq 0
Divide both sides by -1. Since -1 is negative, the inequality direction is changed.
2x<-1
Now consider the case when 2x+1 is negative. Move 1 to the right hand side.
x<-\frac{1}{2}
Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
x+1\geq 2x+1
The initial inequality changes the direction when multiplied by 2x+1 for 2x+1<0.
x-2x\geq -1+1
Move the terms containing x to the left hand side and all other terms to the right hand side.
-x\geq 0
Combine like terms.
x\leq 0
Divide both sides by -1. Since -1 is negative, the inequality direction is changed.
x<-\frac{1}{2}
Consider condition x<-\frac{1}{2} specified above.
x\in (-\infty,-\frac{1}{2})\cup [0,\infty)
The final solution is the union of the obtained solutions.