Question

Т 1. Найдите значение выражения: а) 3 3/4+ 2 4/7, б) 2 4,/9 - 1 5/6, в) 7 11/15-(3 9/20+ 1 1/30)​

Answer 1

Ответ:

Пошаговое объяснение:

1) 33/4+24/7=231/28+96/28=327/28

2)

Answer 2

а) 3 3/4 + 2 4/7 = 3 + 3/4 + 2 + 4/7 = 5 + 3/4 + 4/7 = 5 + (21/28) + (16/28) = 5 + 37/28 = 6 9/28

б) 2 4/9 - 1 5/6 = 2 + 4/9 - 1 - 5/6 = 1 + 4/9 - 5/6 = 1 + (24/54) - (45/54) = 1 - 21/54 = 1 - 7/18 = 11/18

в) 7 11/15 - (3 9/20 + 1 1/30) = 7 + 11/15 - 3 - 9/20 - 1 - 1/30 = 7 - 3 + 11/15 - 9/20 - 1/30 = 4 + 44/60 - 27/60 - 2/60 = 4 + 17/60 = 4 17/60