20/4 - 4/5
You asked:
Evaluate the expression: \(\frac{20}{4} - \frac{4}{5}\)
MathBot Answer:
\[ \frac{20}{4} - \frac{4}{5} = \frac{21}{5} = 4.2 \]
The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{20}{4}\) and \(\frac{-4}{5}\) is \(20\). \[ \begin{aligned} \frac{20}{4} - \frac{4}{5} &= \frac{20 \cdot 5}{4 \cdot 5} + \frac{-4 \cdot 4}{5 \cdot 4} \\ &= \frac{100 + -16}{20} \\ &= \frac{84}{20} \\&= \frac{21}{5} \end{aligned} \]