решить примеры по математике 9-4 2/17+2 3/17; 5 3/5-2 6/11+3 3/5;4 3/8+3 7/8-1 3/7;20-3 8/15+10 4/15;30-15 9/10-12 3/10;15 7/11-4 9/16+3 4/11;49-19 3/5-2 2/5;12 4/13-2 13/20+3 9/13;29 11/17-4 5/24+10 6/17

Ответ:

2 12/17; 6 36/55; 2 23/28; 26 11/15; 1 8/10; 14 7/16; 27; 13 7/20; 35 19/24

1) 9 - 4 2/17 + 2 3/17 = 8 17/17 - 4 2/17 + 2 3/17= 4 15/17 + 2 3/17 = 6 18/17 = 7 1/17

2) 5 3/5 - 2 6/11 +3 3/5 = 5 3/5 + 3 3/5 - 2 6/11 = 9 1/5 - 2 6/11 = 9 11/55 - 2 30/55 = 6 36/55

3) 4 3/8+3 7/8-1 3/7 = 8 1/4 - 1 3/7 = 7 1/4 - 3/7 = 29/4 - 3/7 = 203/28 - 12/28 = 191/28 = 6 23/28

4) 20-3 8/15+10 4/15 = 19 15/15 - 3 8/15 + 10 4/15 = 26 11/15