Explicație pas cu pas:
[tex]1 \frac{17}{18} = \frac{1 \times 18 + 17}{18} = \frac{18 + 17}{18} = \frac{35}{18} \\ \\ 2 \frac{5}{33} = \frac{2 \times 33 + 5}{33} = \frac{66 + 5}{33} = \frac{71}{33} \\ \\ \frac{35}{18} - \frac{71}{33} = \frac{35 \times 11}{18 \times 11} - \frac{71 \times 6}{33 \times 6} = \frac{385}{198} - \frac{426}{198} = \frac{385 - 426}{198} = - \frac{41}{198} [/tex]
