Question

Aflati cel mai mic numitor comun al fractiilor:5/6 SI 7/4, 5/9SI 7/6.

Answer 1

6 = 2 * 3
4 = 2 * 2
9 = 3 * 3
___________
c.m.m.n.c. = 2 * 2 * 3 * 3 = 36

Answer 2

6 = 2 × 3
4 = 2²
9 = 3²
cmmmc [6; 4; 9; 6] = 2² × 3² = 4 × 9  $= \boxed{36}$

Daca ar trebui sa adunam fractiile, atunci:
              
$\frac{5}{6} + \frac{7}{4} + \frac{5}{9} + \frac{7}{6}= \\ \\ = \frac{30}{36} + \frac{63}{36} + \frac{20}{36} + \frac{42}{36}= \\ \\ \frac{30 + 63+20+42}{36}=\boxed{ \frac{155}{36}}$