Question

Виконати дії: 1)5/9+1/9; 2)8/17-2/17; 3)21/57+31/57-9/57; 4)5 17/21-3 8/21+4 7/21; 5)14 8/10+5 1/10-6 7/10​

Answer 1

Пошаговое объяснение:

1) 5/9 + 1/9 = (5+1)/9 = 6/9

2) 8/17 - 2/17 = (8-2)/17 = 6/17

3) 21/57 + 31/57 - 9/57 = (21+31-9)/57 = 43/57

4) 5 17/21 - 3 8/21 + 4 7/21 = (5-3+4) + (17-8+7)/21 = 6 + 16/21 = 6 16/21

5) 14 8/10 + 5 1/10 - 6 7/10 = (14+5-6) + (8+1-7)/10 =

13 + 2/10 = 13 2/10