Răspuns:
[tex][ 16/100 + 16/99] : 28/100: 2/99 - 2/7=\\\\\frac{1584+1600}{9900} *100/28*99/2-2/7=\\\\3184/9900*100/28*99/2-2/7=\\\\398/7-2/7=396/7\\\\396/7:3/7=396/7*7/3=396/3=396:3=132[/tex]
la inmultirea a 2 fractii termenii se simplifica atat pe diagonala cat si numitor cu numarator