Question

101/505 : 1/2 - 10101/50505

Answer 1

Lời giải:
$\frac{101}{505}: \frac{1}{2}-\frac{10101}{50505}$

$=\frac{1}{5}: \frac{1}{2}-\frac{1}{5}=\frac{1}{5}\times 2-\frac{1}{5}$

$=\frac{1}{5}\times (2-1)=\frac{1}{5}$