Выполните действия 11 2/7+4 3/7-6 4/7; 26 7/19-13 4/19+5 2 /19; 44 2/9+8 5/9-7/9; 5 7/10+3 9/10+1 3/10; 3 17/100-2 13/100-1;

1) 11 2/7 + 4 3/7 - 6 4/7 = (11 * 7 + 2)/7 + (4 * 7 + 3)/7 - (6 * 7 + 4)/7 = 79/7 + 31/7 - 46/7 = (79 + 31 - 46)/7 = 64/7;

2) (26 * 19 + 7)/19 - (13 * 19 + 4)/19 + (5 * 19 + 2)/19 = 501/19 - 251/19 + 97/19 = (501 - 251 + 97)/19 = 347/19;

3) 44 2/9 + 8 5/9 - 7/9 = (44 * 9 + 2)/9 + (8 * 9 + 5)/9 - 7/9 = 398/9 + 77/9 - 7/9 = (398 + 77 - 7)/9 = 468/9 = 52;

4) 5 7/10 + 3 9/10 + 1 3/10 = (50 + 7)/10 + (30 + 9)/10 + 13/10 = (57 + 39 + 13)/10 = 109/10;

5) 3 17/100 - 2 13/100 - 1 = (317 - 213 - 100)/100 = 4/100 = 1/20;

6) 8 - 431/100 - 257/100 = (800 - 431 - 257)/100 = 112/100.