Question

Найдите значение выражения:1) 4/11+3/11-5/11; 2)8/15-4/15+1/15; 3)2 2/9-1 1/9+3 5/9; 4)7 2/7+1 3/7-2 1/7

Answer 1

1)4\11+3\11-5\11=2\11
2)8/15-4/15+1/15=5\15=1\3
3)2 2/9-1 1/9+3 5/9=4 6\9=4 2\3
4)7 2/7+1 3/7-2 1/7=6 4\7

Answer 2

1. 4/11 + 3/11 - 5/11 = 2/11
2. 8/15 - 4/15 + 1/15 = 5/15 = 1/3
3. 2 2/9 - 1 1/9 + 3 5/9 = (2 - 1 + 3) + (2/9 - 1/9 + 5/9) = 4 6/9 = 4 2/3
4. 7 2/7 + 1 3/7 - 2 1/7 = (7 + 1 - 2) + (2/7 + 3/7 - 1/7) = 6 + 4/7