Răspuns:
[tex] \frac{7}{12} + \frac{2}{3} = \frac{7}{12} + \frac{2 \times 4}{3 \times 4} = \frac{7}{12} + \frac{8}{12} = \frac{7 + 8}{12} = \frac{15 {}^{(3} }{12} = \frac{5}{4} [/tex]
