Question

Выполите действие 7×2 3/7, 2 2/5×10, 6×4 5/12

Answer 1

1) $7*2 \frac{3}{7}=7* \frac{17}{7} = \frac{7*17}{7} =17$
2) $2 \frac{2}{5} *10= \frac{12}{5} *10= \frac{12*10}{5}=12*2=24$
3) $6*4 \frac{5}{12}=6* \frac{53}{12} = \frac{6*53}{12}= \frac{53}{2} =26 \frac{1}{2}$ или 26,5 

Answer 2

$1) 7* 2\frac{3}{7}=7* \frac{14+3}{7} =7* \frac{17}{7}= \frac{7*17}{7} =17$

$2) 2 \frac{2}{5} *10= \frac{10+2}{5} *10= \frac{12}{5} *10= \frac{12*10}{5} = 12*2=24$

$3) 6* 4 \frac{5}{12} = 6* \frac{48+5}{12}=6* \frac{53}{12} = \frac{6*53}{12} = \frac{53}{12} = 26 \frac{1}{2}$