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Calculati: a)1/2+2/3:4/9=...

Răspuns :

a. 1/2+2/3·9/4
⇒1/2+1/1·3/2
⇒1/2+3/2
⇒4/2=2;

Acest exercitiu ia o forma mai simpla
[tex] \frac{1}{2} + \frac{2}{3} * \frac{9}{4} [/tex]
[tex] \frac{1}{2}+ \frac{1}{1} * \frac{3}{2} [/tex]
[tex] \frac{1}{2} + \frac{3}{2} [/tex]
[tex] \frac{4}{2} =2[/tex]