Răspuns:
a)3/4*4/5+1/5=12/20+1/5=3/5+1/5=4/5
b)3/4+4/5*5/8=3/4+20/40=3/4+2/4=5/4
c)(5/6+19/24)*24/13=(20/24+19/24)*24/13=39/24*24/13=936/312=3/1
d)18/3*(10/9+1/3)=18/3*13/9=6/1*13/9=78/9
e)12/35*(5/6-1/4)=12/35*7/12=84/420
f)21/8*(3/5-1/3)+4/15=21/8*(9/15-5/15)+4/15=21/8*4/15+4/15=21/30+4/15=29/30
Sper ca e bine
Dar daca nu nu da te rog report.
