Математика: Нужно расписать решение всех примеров

Нужно расписать решение всех примеров

Ответ:

YolloYP

06.10.2020 21:00

$64 \times \frac{7}{12} = \frac{64 \times 7}{12} = \frac{16 \times 7}{3} = \frac{112}{3} = 37 \frac{1}{3} \\ 7 \frac{8}{11} \times 2 \frac{1}{5} = \frac{85 \times 11}{11 \times 5} = \frac{17 \times 1}{1 \times 1} = 17 \\ \frac{9}{13} \times 91 = \frac{9 \times 91}{13} = \frac{9 \times 7}{1} = 63 \\ \frac{1}{15} \times \frac{4}{5} = \frac{4}{15 \times 5} = \frac{4}{75} \\ 5 \frac{7}{20} \times \frac{1}{2} = \frac{107}{20 \times 2} = \frac{107}{40} = 2 \frac{27}{40} \\ 3 \frac{13}{21} \times 28 = \frac{76 \times 28}{21} = \frac{76 \times 4}{3} = \frac{304}{3} = 101 \frac{1}{3} \\ 1 \frac{5}{26} \times 1 \frac{1}{3} = \frac{31 \times 4}{26 \times 3} = \frac{31 \times 2}{13 \times 3} = \frac{62}{39} = 1 \frac{23}{39} \\ 16 \times 5 \frac{3}{4} = \frac{1 6\times 23}{4} = \frac{4 \times 23}{1} = 92$

$3 \frac{3}{8} \div 1 \frac{1}{2} = \frac{27}{8} \div \frac{3}{2} = \frac{27 \times 2}{8 \times 3} = \frac{9 \times 1}{4 \times 1} = \frac{9}{4} = 2 \frac{1}{4} = 2.25 \\ \frac{5}{13} \div 4 \frac{1}{2} = \frac{5}{13} \div \frac{9}{2} = \frac{5 \times 2}{13 \times 9} = \frac{10}{117} \\ 2 \frac{2}{5} \div \frac{11}{13} = \frac{12}{5} \div \frac{11}{13} = \frac{12 \times 13}{5 \times 11} = \frac{156}{55} = 2 \frac{46}{55} \\ 76 \div 20 = \frac{76}{20} = \frac{19}{5} = 3 \frac{4}{5} = 3.8 \\ 14 \div \frac{11}{13} = \frac{14 \times 13}{11} = \frac{182}{11} = 16 \frac{6}{11} \\ 16 \frac{8}{9 } \div 1 \frac{13}{63} = \frac{152}{9} \div \frac{76}{63} = \frac{152 \times 63}{9 \times 76} = \frac{2 \times 7}{1 \times 1} = 2 \times 7 = 14 \\ \frac{3}{7} \div \frac{1}{14} = \frac{3 \times 14}{7} = \frac{3 \times 2}{1} = 6\\ 9 \frac{5}{9} \div 15 = \frac{86}{9 \times 15} = \frac{86}{135}$