[tex]a)\\ \\ 6 = 2\cdot 3 \\ 9 = 3^2 \\ \\ \Rightarrow $ c.m.m.m.c.(6; $ $9)$ = 2\cdot 3^2 = 2\cdot 9 = 18[/tex]
[tex]b) \\ \\ 14 =2\cdot 7 \\ 24 = 2\cdot 12 = 2\cdot 3\cdot 4 = 2\cdot 3\cdot 2^2 = 2^3\cdot 3 \\ 28 = 2\cdot 14 = 2\cdot2\cdot 7 = 2^2\cdot 7\\ \\ \Rightarrow $ c.m.m.m.c.$(14; $ $24;$ $9) = 2^3\cdot 3\cdot 7 = 8\cdot 3\cdot 7 = 24\cdot 7 = 168[/tex]
