Odpowiedź:
A)
[tex] \frac{1}{6} \times 20 = \frac{1}{3} \times 10 = 3 \frac{1}{3} [/tex]
B)
[tex] \frac{3}{5} \times 30 = \frac{3}{1} \times 6 = 18 [/tex]
C)
[tex]2 \frac{3}{4} \times 20 = \frac{11}{4} \times 20 = \frac{11}{1} \times 5 = 55[/tex]
D)
[tex] \frac{1}{7} \times 10 = \frac{10}{7} = 1 \frac{3}{7} [/tex]
E)
[tex] \frac{3}{5} \times 18 = \frac{54}{5} = 10 \frac{4}{5} [/tex]
F)
[tex]2 \frac{1}{3} \times 20 = \frac{7}{3} \times 20 = \frac{140}{3} = 46 \frac{2}{3} [/tex]