Question

найдите значение выражений номер 436 1) 5/8+5/6+7/12 2) 1/5+3/8-2/9 3) 1/4+2/9-5/36 4) 3/4+4/5+1/20 5) 3/4+5/12-1/9 6) 4/15+2/5+7/10.​

Answer 1

Ответ:

Пошаговое объяснение:

1) 5/8+5/6+7/12 = (15+20+14)/24 = 49/24 = 2 1/24

2) 1/5+3/8-2/9 = (8+15)/40 - 2/9 = 23/40 - 2/9 = (207-80)/360 = 127/360

3) 1/4+2/9-5/36 = (9+8-5)/36 = 12/36 = 1/3

4) 3/4+4/5+1/20 = (15+16+1)/20 = 32/20 = 1 12/20 = 1 3/5

5) 3/4+5/12-1/9 = (27+15-4)/36 = 38/36 = 1 2/36 = 1 1/18

6) 4/15+2/5+7/10 = (16+24+42)/60 = 82/60 = 1 22/60 = 1 11/30

Answer 2

1) Ответ: 1/2 Вычислим каждое выражение по очереди: 5/8 + 5/6 + 7/12 = (15/24) + (20/24) + (14/24) = 49/24 = 2 1/24 2) Ответ: 43/360 1/5 + 3/8 - 2/9 = (36/180) + (45/180) - (40/180) = 41/180 = 0.2277 3) Ответ: 5/9 1/4 + 2/9 - 5/36 = (9/36) + (8/36) - (5/36) = 12/36 = 1/3 = 0.3333 4) Ответ: 79/60 3/4 + 4/5 + 1/20 = (45/60) + (48/60) + (3/60) = 96/60 = 8/5 = 1.6 5) Ответ: 37/54 3/4 + 5/12 - 1/9 = (27/36) + (15/36) - (4/36) = 38/36 = 19/18 = 1.0556 6) Ответ: 73/150 4/15 + 2/5 + 7/10 = (40/150) + (60/150) + (105/150) = 205/150 = 41/30 = 1.3667