1 ВЫЧЕСЛИТЕ 3 ПРИМЕР 2 ВЫЧЕСЛИТЕ 5 ПРИМЕР

№1.
3. ( $( 2\frac{3}{5} - \frac{5}{8} ) : 19 \frac{3}{4}$ = $\frac{1}{10}$
1) $2 \frac{3}{5} - \frac{5}{8} = \frac{13}{5} - \frac{5}{8}$ = $\frac{13 * 8}{5 * 8} - \frac{5 * 5}{8 * 5} = \frac{104}{40} - \frac{25}{40} = \frac{79}{40} = 1 \frac{39}{40}$
2) $1\frac{39}{40} : 19 \frac{3}{4} = \frac{79}{40} : \frac{79}{4} = \frac{79}{40} * \frac{4}{79} = \frac{1}{10}$
№2.
5. 9 $\frac{4}{5}$ : ( $4\frac{2}{3} * 10 \frac{1}{2}$ ) = $\frac{1}{5}$
1) $4 \frac{2}{3} * 10 \frac{1}{2} = \frac{14}{3} * \frac{21}{2} = 49$
2) $9\frac{4}{5} : 49 = \frac{49}{5} * \frac{1}{49} = \frac{1}{5}$