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Efectuati:
a). [tex] \frac{2}{3}+\frac{3}{5}×\frac{5}{6} [/tex]
b). [tex] 1\frac{1}{2}×2\frac{2}{3}+ 5[/tex]
a cu caciulita este ori


Răspuns :

a)

[tex]\dfrac{2}{3}+\dfrac{3}{\not5}\cdot\dfrac{\not5}{6} =\dfrac{2}{3}+ \dfrac{3}{6} =\dfrac{4}{6}+\dfrac{3}{6}=\dfrac{7}{6} =1\dfrac{1}{6}[/tex]

b)

Introduc intregii in fractie:

[tex]\dfrac{\not3}{2}\cdot\dfrac{8}{\not3}+5 = \dfrac{8}{2} +5 =4+5=9.[/tex]