Răspuns:
Explicație pas cu pas:
[tex]\displaystyle \frac{5}{6} \div \frac{1}{2} + 2.(4) = \frac{5}{6} \div \frac{1}{2} + 2 \frac{4}{9} = \frac{5}{6} \times 2 + \frac{22}{9} = \frac{10}{6 } + \frac{22}{9} = \frac{30}{18} + \frac{44}{18} = \frac{74}{18} = \frac{37}{9} \\\\ \frac{2}{3} \times 1h = \\ \\ \frac{2}{3} \times 60min = \\ \\ \frac{120min}{3 } = 40min\\ \frac{40}{100} \times 1.25 = \\ \\ \frac{40}{100} \times \frac{125}{100} = \\ \\ \frac{5000}{10000} = 5[/tex]