Răspuns:
[tex]\frac{12:3}{18:3} = \frac{4}{6} \\\\\frac{2*5}{7*5} = \frac{10}{35} \\\\\frac{3}{4} *100 = \frac{3*25}{1} = 75\\\\\frac{25}{100} *80 = \frac{25}{10}*8 = \frac{25*8}{10} = \frac{200}{10} = 20[/tex]
Explicație pas cu pas:
