pls cele doua exercitii

Pls Cele Doua Exercitii class=

Răspuns :

33)a/b=550:11/5=550x5/11=50x5=250

34) 4a/3b=78/10
a/b=78/10:4/3=78/10x3/4=(39x3)/10x2=117/20
5a/9b=(a/b)x(5/9)=(117/20)x(5/9)=13/4