Question

va rog un punct sau doua..trebuie sa calculați.............​

Answer 1

Răspuns:

a 15/126   b 3/90 c 36/40  d 14/248  e 105/1260

Explicație pas cu pas:

Answer 2

$\frac{15}{7} \times \frac{1}{18} = \frac{5}{7} \times \frac{1}{6} = \frac{5}{42}$

$\frac{1}{9} \times \frac{3}{10} = \frac{1}{3} \times \frac{1}{10} = \frac{1}{30}$

$\frac{4}{5} \times \frac{9}{8} = \frac{1}{5} \times \frac{9}{2} = \frac{9}{10}$

$\frac{7}{8} \times \frac{2}{31} = \frac{7}{4} \times \frac{1}{31} = \frac{7}{124}$

$\frac{9}{43} \times \frac{5}{21} = \frac{3}{43} \times \frac{5}{7} = \frac{15}{301}$

$\frac{7}{45} \times \frac{15}{28} = \frac{1}{3} \times \frac{1}{4} = \frac{1}{12}$