$$-2\cfrac { 1 }{ 9 } -6=\cfrac { -19 }{ 9 } -\cfrac { 6 }{ 1 } =\cfrac {
-19\times 1 }{ 9\times 1 } -\cfrac { 6\times 9 }{ 1\times 9 } =\cfrac {
-19 }{ 9 } -\cfrac { 54 }{ 9 } =\cfrac { -19-54 }{ 9 } =\cfrac { -73 }{
9 } =-8\cfrac { 1 }{ 9 } $$
L.C.M of $$9$$ and $$1$$ is $$9$$