a)2/5:16/25=2/5:25/16=2/5•25/16=1•5/1•8=5/8
b)9/22:3/44=9/22:44/3=9/22•44/3=3•1/1•22=3/22
c)27/20:81/40=27/20:40/81=27•40/20•81=1080/1620
d)4/27:4/3=4/27:3/4=1•3/9•1=3/9
Pt. a impartii o fractie la o alta fractie trebuie sa pastezi prima fractie impartita cu inversul celeilalt.Ex:20/10:5/4=pastram prima fractie impartita la inversul celeilalte fr. adica 4/5=apoi simplificam nr. apoi inmultim numitorii si numaratorii adica 5•1/1•2=5/2
Pe f) si e) nu stiu sa le fac.Dar,sper ca te-am ajutat!
