Помогите!(1 7/12 - 1 19/42) : 36 + 4 2/7 * 2,1

Question

Помогите!
(1 7/12 - 1 19/42) : 36 + 4 2/7 * 2,1

Answer 1

1)1 7/12-1 19/42=19/12-61/42=133/84-122/84=11/84
2)11/84:36=11/84*1/36=11/3024
3)4 2/7*2,1=30/7*2 1/10=30/7*21/10=9
4)11/3024+9= 9 11/3024

Answer 2

(1 7/12-1 19/42):36+4 2/7=
1) 1 7/12-1 19/42=49/84-38/84=9/84=3/28
2) 3/28:36=1/336
3)1/336+4 2/7=5 97/336