👤

Demonstreaza in doua moduri egalitatile:
a)[tex] \frac{4}{7} [/tex]=[tex] \frac{12}{21} [/tex]


Răspuns :

[tex] \frac{4}{7} = \frac{12}{21} [/tex]
Simplificam a doua fractie prin 3 => 4/7=4/7 (A)
Facem produsul pe diagonala:
4*21=7*12<=> 84=84 (A)