Question

(5,4-2 целых 13):7целых 23=

Answer 1

(5,4 - 2 1/3) : 7 2/3 = 2/5,

1) 5,4 - 2 1/3 = 54/10 - 7/3 = 162/30 - 70/30 = 92/30 = 3 1/15, :
2) 3 1/15 : 7 2/3 = 46/15 : 23/3 = 46/15 * 3/23 = 2/5