Question

Please! Dau coronita!

Answer 1

Ca sa poti calcula fiecare operatie, trebuie sa ajungi la acelasi numitor.

1) Amplific cu 9 al doilea numar

$\frac{4}{9}+3= \frac{4}{9}+ \frac{3*9}{9}= \frac{4+27}{9}= \frac{31}{9}$

2) Amplifici numarul 4 cu 7

$\frac{5}{7}+4= \frac{5}{7}+ \frac{4*7}{7}= \frac{5+28}{7}= \frac{33}{7}$