[tex]pentru \: o \: portie \\ \frac{1}{2} kg \: zahar \: \\ 1 \frac{2}{5} pahare \: apa \\ \frac{3}{4} lingurite \: de \: esenta[/tex]
[tex]pentru \: trei \\ \frac{1}{2} \times 3 = \frac{1}{6} zahar \\ \frac{7}{5} \times 3 = \frac{21}{5} = 2 \frac{1}{10} apa \\ \frac{3}{4} \times 3 = \frac{9}{4} \: lingurite \: de \: esenta[/tex]