Дай 50 баллов! Срочно

N 5 1) - 3/4 : 5/6 = - 9/10 2) 2 1/2 • 2/5 = 5/2 • 2/5 = 1 3) 1 : 1 1/9 = 1 : 10/9 = 9/10 4) - 9/10 - 1 + 9/10 = - 1 Ответ ( - 1 ) N 6 1) - 2/5 + 1 1/2 = - 4/10 + 15/10 = 11/10 2) 2 3/4 : 11/10 = 11/4 : 11/10 = 10/4 = 5/2 3) - 3/4 - 5/6 = - 9/12 - 10/12 = - 19/12 4) - 19/12 : 3 1/6 = - 19/12 • 6/19 = - 1/2 5) 5/2 - ( - 1/2 ) = 6/2 = 3 Ответ 3