Задача Задача №446326
А
А
2 2/3 - (-7,8) = 2 2/3 + 7,8 = 2 2/3 + 7 8/10 = 2 2/3 + 7 4/5 = 2 2/3 + 7 (5/5 + 4/5) = 2 2/3 + 7 9/5 = (23 + 2)/3 + (75 + 9)/5 = 8/3 + 44/5 = (85 + 443)/(3*5) = 40/15 + 132/15 = 172/15 = 11 7/15.
Ответ: 11 7/15.
2 2/3 - (-7,8) = 2 2/3 + 7,8 = 2 2/3 + 7 8/10 = 2 2/3 + 7 4/5 = 2 2/3 + 7 (5/5 + 4/5) = 2 2/3 + 7 9/5 = (23 + 2)/3 + (75 + 9)/5 = 8/3 + 44/5 = (85 + 443)/(3*5) = 40/15 + 132/15 = 172/15 = 11 7/15.
Ответ: 11 7/15.
