Question

Найдите значения выражения 13/8: 0,26-1 1/4

Answer 1

$\displaystyle 0,26= \frac{26}{100}= \frac{13}{50}$
$\displaystyle 1 \frac{1}{4} = \frac{4 \cdot 1+1}{4}= \frac{5}{4}$

$\displaystyle \bf \frac{13}{8} : \frac{13}{50}- \frac{5}{4} = \frac{13}{8} \cdot \frac{50}{13}- \frac{5}{4} = \frac{25}{4}- \frac{5}{4} = \frac{20}{4}=\boxed {\bf 5}$