Question

(3/4-1/2)*5 5/7+1/21) (7/10-1/5):3

Answer 1

((34 - 12) ×5_57+121)(710-15):3=31105
1) 34-12=14
2)14*5_57=1_37
3)1_37+121=1_1021
4)710-15=12
5)12:3=15
6)1_1021*15=31105