Question

4. Reconstituiți lanţul de calcule: ​

Answer 1

$\frac{1}{3} \times \frac{3}{4} = \frac{4}{12} \times \frac{9}{12} = \frac{1}{4} \times \frac{3}{3} = \frac{1}{4} \times 1 = \frac{1}{4}$

$\frac{1}{4} \times \frac{4}{5} = \frac{5}{20} \times \frac{16}{20} = \frac{80}{20} = 4$

$4 \times \frac{5}{6} = \frac{20}{6} = \frac{10}{3}$

$\frac{10}{3} \times \frac{6}{7} = \frac{70}{21} \times \frac{18}{21} = \frac{10}{7} \times \frac{6}{3} = \frac{10}{7} \times 2 = \frac{20}{7}$

Răspuns final: $\frac{20}{7}$