Question

Urgent!Dau coronita la fiecare raspuns!​

Answer 1

Raspuns si Explicatie:A)

$\frac{5}{4} \times \frac{6}{7} \times \frac{28}{15} = 5 \times \frac{6}{7} \times \frac{7}{15} = \frac{6}{7} \times \frac{7}{3 } = 6 \times \frac{1}{3} = 2$

B)

$\frac{9}{8} \times \frac{4}{3} \times \frac{2}{13} = \frac{3}{8} \times 4 \times \frac{2}{15} = \frac{3}{2} \times \frac{2}{15} = \frac{1}{5}$

C)

$\frac{20}{17} \times \frac{9}{5} \times 3 \times \frac{3}{7} = \frac{4}{17} \times 9 \times 3 \times \frac{3}{7} = \frac{4}{7} \times 9 \times 3 \times 3 \times \frac{3}{7} = \frac{324}{119}$

D)

$\frac{22}{15} \times \frac{10}{11} \times \frac{7}{9} = \frac{2}{15} \times 10 \times \frac{7}{9 } = \frac{2}{3} \times 2 \div \frac{7}{ 9} = \frac{28}{27}$