Найдите значение суммы: 1)-5/7+4/7; 2)-5/8+7/8; 3) -1/6+1; 4) 5/12-1/12; 5) 7/15-11/15; 6) 5/16-1/6.
1)-5/7+4/7; = - 1/7 2)-5/8+7/8; = 2/8 = 1/4 3) -1/6+1; = - 1/6 + 6/6 = 5/6 4) 5/12-1/12; = 4/12 = 1/3 5) 7/15-11/15; = - 4/15 6) 5/16-1/6. = 4/16 = 1/4
Спасибо