21/40-5/10=
You asked:
Evaluate the expression: \(\frac{21}{40} - \frac{5}{10}\)
MathBot Answer:
\[ \frac{21}{40} - \frac{5}{10} = \frac{1}{40} = 0.025 \]
The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{21}{40}\) and \(\frac{-5}{10}\) is \(40\). \[ \begin{aligned} \frac{21}{40} - \frac{5}{10} &= \frac{21 \cdot 1}{40 \cdot 1} + \frac{-5 \cdot 4}{10 \cdot 4} \\ &= \frac{21 + -20}{40} \\ &= \frac{1}{40} \end{aligned} \]