Răspuns:
exercițiul 11: 3/5
Explicație pas cu pas:
[tex]a = 1 \times \frac{1}{9} + 2 \times \frac{2}{9} = 3 \times \frac{3}{9} = 3 \times \frac{1}{3} = \frac{10}{3} \\ b = 5 \times \frac{5}{9} = \frac{50}{9} \\ \frac{a}{b} = \frac{10}{3} \div \frac{50}{9} = \frac{10}{3} \times \frac{9}{50} = \frac{3}{5} [/tex]
