Explicație pas cu pas:
a cu 3,
[tex] \frac{1 \times 3}{2 \times 3} = \frac{ 3}{6} [/tex]
b cu 5
[tex] \frac{2 \times 5}{3 \times 5} = \frac{10}{15} [/tex]
c cu 6
[tex] \frac{2 \times 6}{7 \times 6} = \frac{12}{42} [/tex]
[tex] \frac{5}{11} = \frac{10}{22} = \frac{20}{44} = \frac{20}{55} = \frac{35}{77} = \frac{50}{110} [/tex]
