Odpowiedź :
[tex] \frac{4}{5} + \frac{3}{5} \times \frac{2}{3} = \frac{4}{5} + \frac{6}{15} = \frac{4}{5} + \frac{2}{5} = \frac{6}{5} = 1 \frac{1}{5} [/tex]
3 - 2/7 + 5/7 = 3 + 3/7 = 3 3/7
[tex] \frac{4}{5} + \frac{3}{5} \times \frac{2}{3} = \frac{4}{5} + \frac{6}{15} = \frac{4}{5} + \frac{2}{5} = \frac{6}{5} = 1 \frac{1}{5} [/tex]
3 - 2/7 + 5/7 = 3 + 3/7 = 3 3/7