1) -5,2 : (-1 2/5), 2) -1 2/9 : (-5 1/3), 3) -4/33: - вопрос №3309025152125212951334338554867 от mastermin 05.05.2022 14:54

Question

Математика: 1) -5,2 : (-1 2/5), 2) -1 2/9 : (-5 1/3), 3) -4/33: (-8/55) 4) 8 6/7 : (-31) 5)-7: (-14/17).выпольните деление. .

mastermin · Answer

1) -5,2 : (-1 2/5) = - 5 2/10 : (-1 2/5) =
= -52/10 : (-7/5) = 26•5/(5•7) = 26/7 = 3 5/7

2) -1 2/9 : (-5 1/3) = - 11/9 : (-16/3) =
= 11•3/(9•16) = 11/48

3) -4/33 : (-8/55) = 4•55/(33•8) =
= 5/(3•2) = 5/6

4) 8 6/7 : (-31) = 62/7 : (-31) = - 2/7

5) -7 : (-14/17) = 7•17/14 = 17/2 = 8,5