пример ( 1 2/7÷2 4/7 -2/5 × 5/6 ) + 2 2/5 ÷ 2 2/15

Question

пример ( 1 2/7÷2 4/7 -2/5 × 5/6 ) + 2 2/5 ÷ 2 2/15

Answer 1

1)1 2/7:2 4/7=9/7:18/7=9/7*7/18=1/2.
2)2/5*5/6=1/3.
3)1/2-1/3=3/6-2/6=1/6.
4)2 2/5:2 2/15=12/5:32/15=12/5*15/32=9/8=1 1/8.
5)9/8+1/6=27/24+4/24=31/24=1 7/24.
Ответ: 1 7/24.