2 3/5 4 9/20 = (13/5) (89/20)
= (1389) / (520)
= 1157 / 100
= 11 57/100
7/19 57 = (7/19) 57
= 399 / 19
= 20 19/19
= 21
2 3/5 4 9/20 = (13/5) (89/20)
= (1389) / (520)
= 1157 / 100
= 11 57/100
7/19 57 = (7/19) 57
= 399 / 19
= 20 19/19
= 21