Question

Por favor me ajudem, preciso do cálculo da questões I e J

Answer 1

i)

$2 \frac{1}{ 3} \div \frac{5}{9} = \frac{3 \times 2 + 1}{3} \div \frac{5}{9} = \frac{7}{3} \div \frac{5}{9} = \frac{7}{3} \times \frac{9}{5} = \frac{3 \times 7}{5} = \frac{21}{5}$

j)

$\frac{4}{5} \div \frac{3 \times 1 + 1}{3} = \frac{4}{5} \div \frac{4}{3} = \frac{4}{5} \times \frac{3}{4} = \frac{3}{5}$