Evaluate
-\frac{h}{10\left(h+10\right)}
Factor
-\frac{h}{10\left(h+10\right)}
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\frac{10}{10\left(h+10\right)}-\frac{h+10}{10\left(h+10\right)}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of h+10 and 10 is 10\left(h+10\right). Multiply \frac{1}{h+10} times \frac{10}{10}. Multiply \frac{1}{10} times \frac{h+10}{h+10}.
\frac{10-\left(h+10\right)}{10\left(h+10\right)}
Since \frac{10}{10\left(h+10\right)} and \frac{h+10}{10\left(h+10\right)} have the same denominator, subtract them by subtracting their numerators.
\frac{10-h-10}{10\left(h+10\right)}
Do the multiplications in 10-\left(h+10\right).
\frac{-h}{10\left(h+10\right)}
Combine like terms in 10-h-10.
\frac{-h}{10h+100}
Expand 10\left(h+10\right).
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