Odpowiedź:
[tex]3.4 - 5.6 = - 2.2[/tex]
[tex] - 1 \frac{3}{4} \times 2 \frac{2}{3} = - 2 \frac{6}{12} = - 2 \frac{1}{2} [/tex]
[tex] - \frac{4}{7} \div 0.2 = - \frac{4}{7} \div \frac{2}{10} = - \frac{4}{7} \times \frac{5}{1} = - \frac{20}{7} = - 2 \frac{6}{7} [/tex]
