Question

Даю 60 баллов!Помогите

Answer 1

№1

а) 10/12 - 7/12 = 3/12= 1/4
б) -9/24 - 10/24 = -19/24
в) -4/7 * 5/12 = -5/21
г) 4/15 : (-2/3) = -2/5

№2

-5/9 * 3/4 - 11/20 : (-3/5) = -5/12 + 11/12 = 6/12 = 1/2

№3

1/16 + 1/24 = 1/х
х = 48/5 = 9,6 часов

№4

а) -7/9 * 6/11 - 6/11 * 2/9 = -1 * 6/11 = 6/11
б) 5/7 * 8/11 - 8/11 * (5/7 - 1/4) = -1/4 * 8 /11 = -2/11

№5

1) (-2 13/25) * (-10/27) = -63/25 * (-10/27) = 14/15
2) 17 25/47 : (-17 25/47) = -1
3) 14/15 - (-1) - 4 3/5 = 19/15 - 4 9/15 = 1 4/15 - 4 9/15 = -3 5/15 = -3 1/5

№6 смотри фото