Задача Задача №133004
А
А
(2 3/5 - 1 7/10) + (1 1/2 - 7/20) = (13/5 - 17/10) + (3/2 - 7/20) = (26/10 - 17/10) + (60/40 - 7/20) = 9/10 + 53/40 = (9 * 4)/(10 * 4) + (53 * 1)/(40 * 1) = 36/40 + 53/40 = (36 + 53)/40 = 89/40
Ответ: 89/40
(2 3/5 - 1 7/10) + (1 1/2 - 7/20) = (13/5 - 17/10) + (3/2 - 7/20) = (26/10 - 17/10) + (60/40 - 7/20) = 9/10 + 53/40 = (9 * 4)/(10 * 4) + (53 * 1)/(40 * 1) = 36/40 + 53/40 = (36 + 53)/40 = 89/40
Ответ: 89/40
