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\frac{x+1}{x\left(x+1\right)}+\frac{xx}{x\left(x+1\right)}-\frac{1}{x^{2}+x}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of x and x+1 is x\left(x+1\right). Multiply \frac{1}{x} times \frac{x+1}{x+1}. Multiply \frac{x}{x+1} times \frac{x}{x}.
\frac{x+1+xx}{x\left(x+1\right)}-\frac{1}{x^{2}+x}
Since \frac{x+1}{x\left(x+1\right)} and \frac{xx}{x\left(x+1\right)} have the same denominator, add them by adding their numerators.
\frac{x+1+x^{2}}{x\left(x+1\right)}-\frac{1}{x^{2}+x}
Do the multiplications in x+1+xx.
\frac{x+1+x^{2}}{x\left(x+1\right)}-\frac{1}{x\left(x+1\right)}
Factor x^{2}+x.
\frac{x+1+x^{2}-1}{x\left(x+1\right)}
Since \frac{x+1+x^{2}}{x\left(x+1\right)} and \frac{1}{x\left(x+1\right)} have the same denominator, subtract them by subtracting their numerators.
\frac{x+x^{2}}{x\left(x+1\right)}
Combine like terms in x+1+x^{2}-1.
\frac{x\left(x+1\right)}{x\left(x+1\right)}
Factor the expressions that are not already factored in \frac{x+x^{2}}{x\left(x+1\right)}.
1
Cancel out x\left(x+1\right) in both numerator and denominator.