6 = 2 × 3
4 = 2²
9 = 3²
cmmmc [6; 4; 9; 6] = 2² × 3² = 4 × 9 [tex]= \boxed{36}[/tex]
Daca ar trebui sa adunam fractiile, atunci:
[tex] \frac{5}{6} + \frac{7}{4} + \frac{5}{9} + \frac{7}{6}= \\ \\ = \frac{30}{36} + \frac{63}{36} + \frac{20}{36} + \frac{42}{36}= \\ \\ \frac{30 + 63+20+42}{36}=\boxed{ \frac{155}{36}}[/tex]
