Răspuns:
a) [tex]\frac{5}{8} =\frac{10}{16} = \frac{25}{40}[/tex] ( amplifici -inmultesti fractia cu un numar )
b) [tex]\frac{10}{24} =\frac{20}{48} =\frac{30}{72}[/tex]
c)[tex]\frac{7}{20} =\frac{21}{60} =\frac{28}{80}[/tex]
d) [tex]\frac{12}{14} =\frac{24}{28} =\frac{36}{42}[/tex]
e)[tex]\frac{3}{18} =\frac{6}{36} =\frac{9}{54}[/tex]
f) [tex]\frac{33}{31}=\frac{66}{62} =\frac{99}{93y}[/tex]
g) [tex]\frac{8}{13} =\frac{16}{26} =\frac{32}{52}[/tex]
h)[tex]\frac{9}{19}=\frac{18}{38} =\frac{27}{57}[/tex]
