1 31/32*3 1/5-(8 5/9*6/35+22/15)*5/12

Question

1 31/32*3 1/5-(8 5/9*6/35+22/15)*5/12

Answer 1

1)8 5/9  ×  6/35 = 77/9  ×  6/35 =  22/15 = 1 7/15
2)1 7/15  +  22/15 = 22/15  +  22/15 =  44/15 = 2 14/15
3)1 31/32  ×  3 1/5 = 63/32  ×  16/5 =  63/10 = 6 3/10
4)2 14/15  ×  5/12 = 44/15  ×  5/12 =  11/9 = 1 2/9
5)6 3/10  -  1 2/9 = 63/10  -  11/9 =(63 × 9  -  11 × 10)/90 = 567/90  -  110/90 =  457/90 = 5 7/90
ответ: 5 7/90