Răspuns :
1)
[tex] \frac{2}{3} \times 5 = \frac{2 \times 5}{3} = \frac{10}{3} [/tex]
c)
[tex]4 \times \frac{3}{8} = \frac{4 \times 3}{8} = \frac{12}{8} = \frac{3}{2} [/tex]
d)
[tex]6 \times \frac{5}{9} = \frac{6 \times 5}{9} = \frac{30}{9} = \frac{10}{3} [/tex]
2) a)
[tex] \frac{3}{2} \times \frac{3}{5} = \frac{3 \times 3}{2 \times 5} = \frac{9}{10}[/tex]
c)
[tex] \frac{4}{5} \times \frac{7}{3} = \frac{4 \times 7}{5 \times 3} = \frac{28}{15} [/tex]
d)
[tex] \frac{8}{3} \times \frac{5}{7} = \frac{8 \times 5}{3 \times 7} = \frac{40}{21}[/tex]
3) a)
[tex] \frac{3}{7} \times \frac{4}{9} = \frac{3 \times 4}{7 \times 9} = \frac{12}{63} = \frac{4}{21} [/tex]
