Question

допоможіть будь ласка!!!
Дам 100 балів

Answer 1

Пошаговое объяснение:

а)

(14 1/8 + 9 8/15) - 5 1/8 =

14 1/8 + 9 8/15 - 5 1/8 = (14 1/8 - 5 1/8) + 9 8/15 =

9 + 9 8/15 = 18 8/15

б)

10 5/7 - (4 5/12 + 3 3/7) =

10 5/7 - 4 5/12 - 3 3/7 = (10 5/7 - 3 3/7) - 4 5/12 =

7 2/7 - 4 5/12 = 7 24/84 - 4 35/84 =

6 108/84 - 4 35/84 = 2 73/84

в)

3 5/12 + 6 11/26 + 7 19/48 + 8 2/26 =

(3 5/12 + 7 19/48) + (6 11/26 + 8 2/26) =

(3 20/48 + 7 19/48) + 14 13/26 =

10 39/48 + 14 1/2 = 10 39/48 + 14 24/48 =

24 63/48 = 25 15/48 = 25 5/16