Question

Выполните действие: 2 2/15-4/15= b)18 7/12+2 5/24 c)10-3/11 d)7/25+2/5​

Answer 1

Ответ:

Пошаговое объяснение:

а) 2 2/15-4/15=32/15-4/15=28/15=1 13/15

b)18 7/12+2 5/24=223/12+53/24=446/24+53/24=499/24=20 19/24

c)10-3/11=110/11-3/11=107/11=9 8/11

d)7/25+2/5=7/25+10/25=17/25

Answer 2

a) 2 + 2/15 - 4/15 = 2 + (2 - 4)/15 = 2 - 2/15 = (2*15 - 2)/15 = (30 - 2)/15 = 28/15

b) 18 + 7/12 + 2 + 5/24 = 18 + (7/12 + 5/24) + 2 = 18 + (14/24 + 5/24) + 2 = 18 + 19/24 + 2 = (18*24 + 19 + 48)/24 = (432 + 19 + 48)/24 = 499/24

c) 10 - 3/11 = (110/11 - 3/11) = (110 - 3)/11 = 107/11

d) 7/25 + 2/5 = (7/25 + 10/25) = (7 + 10)/25 = 17/25