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va rog ex 3 si 4 repede

Va Rog Ex 3 Si 4 Repede class=

Răspuns :

3.
a)

[tex] \frac{91}{18} \times \frac{9}{14} = \frac{13}{2} \times \frac{1}{2} = \frac{13}{4} [/tex]

b)
[tex] \frac{14}{66} \times \frac{9}{14} = \frac{1}{22} \times \frac{3}{1} = \frac{3}{22} [/tex]


c)

[tex] \frac{35}{54} \times \frac{9}{14} = \frac{5}{6} \times \frac{1}{2} = \frac{5}{12} [/tex]


d)

[tex] \frac{26}{108} \times \frac{9}{14} = \frac{13}{12} \times \frac{1}{7} = \frac{13}{84} [/tex]



4)

a)

[tex] \frac{5}{36} \times \frac{8}{15} = \frac{1}{9} \times \frac{2}{3} = \frac{2}{27} [/tex]

b)

[tex] \frac{5}{36} \times \frac{63}{60} = \frac{1}{4} \times \frac{7}{12} = \frac{7}{48} [/tex]


c)
[tex] \frac{5}{36} \times \frac{48}{45} = \frac{1}{6} \times \frac{8}{9} = \frac{8}{54} = \frac{4}{27} [/tex]


d)

[tex] \frac{5}{36} \times \frac{63}{110} = \frac{1}{4} \times \frac{7}{22} = \frac{7}{88} [/tex]