Question

найдите значение а) 7* 4/37 б) 8/13*4 1/3 в)7/16*3 г)4 4/17*3 7/18 д) 8/63*56е) 5 5/8*1 5/36 ж)3* 3/8 з)2 3/7*1 3/17*2 1/8​

Answer 1

Ответ:

▪︎а, б, в)

$7 times frac{4}{37} = frac{28}{37} \ \ frac{8}{13} times 4 frac{1}{3} = frac{8}{13} times frac{13}{3} = frac{8}{3} = 2 frac{2}{3} \ \ frac{7}{16} times 3 = frac{21}{16} = 1 frac{5}{16}$

▪︎г, д)

$4 frac{4}{17} times 3 frac{7}{18} = frac{72}{17} times frac{61}{18} = frac{4 times 61}{17} = frac{244}{17} = 14 frac{6}{17} \ \ frac{8}{63} times 56 = frac{8 times 8}{9} = frac{64}{9} = 7 frac{1}{9}$

▪︎е, ж, з)

$5 frac{5}{8} times 1 frac{5}{36} = frac{45}{8} times frac{41}{36} = frac{5 times 41}{8 times 4} = frac{205}{32} = 6 frac{13}{32} \ \ 3 times frac{3}{8} = frac{9}{8} = 1 frac{1}{8} \ \ 2 frac{3}{7} times 1 frac{3}{17} times 2 frac{1}{8} = frac{17 times 20 times 17}{7 times 17 times 8} = frac{5 times 17}{7 times 2} = frac{85}{14} = 6 frac{1}{14}$