how do you solve 9/10 minus 2/5
You asked:
Evaluate the expression: \(\frac{9}{10} - \frac{2}{5}\)
MathBot Answer:
\[ \frac{9}{10} - \frac{2}{5} = \frac{1}{2} = 0.5 \]
The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{9}{10}\) and \(\frac{-2}{5}\) is \(10\). \[ \begin{aligned} \frac{9}{10} - \frac{2}{5} &= \frac{9 \cdot 1}{10 \cdot 1} + \frac{-2 \cdot 2}{5 \cdot 2} \\ &= \frac{9 + -4}{10} \\ &= \frac{5}{10} \\&= \frac{1}{2} \end{aligned} \]