5/6+5/18-(3 7/9-2 13/15)

Question

5/6+5/18-(3 7/9-2 13/15)

Answer 1

1) 3 7/9 - 2 13/15 = 1целая + (35/45 - 39/45) = 1ц. - 4/45 = 41/45
2) 5/6 + 5/18 = 15/18 + 5/18 = 20/18 = 1целая 2/18 = 1ц.1/9
3) 1ц 1/9 - 41/45 = 10/9 - 41/45  = 50/45 - 41/45 = 9/45 = 1/5
Ответ в примере: 1/5

Answer 2

5/6+5/18-(3 7/9-2 13/15)=15/18+5/18-(3 35/45-2 39/45)=20/18-1 4/45=20/18-49/45=100/90-98/90=2/90=1/45