[tex]\it \dfrac{7}{44}-\dfrac{2}{33}-\dfrac{1}{11}=\dfrac{1}{11}\Big(\dfrac{^{3)}7}{\ 4}-\dfrac{^{4)}2}{\ 3}-\ ^{12)}1\Big)=\dfrac{1}{11}\cdot\dfrac{21-8-12}{12}=\dfrac{1}{11}\cdot\dfrac{1}{12}=\dfrac{1}{132}[/tex]
7/44-2/33-1/11=
=21/132-8/132-12/132=
=13/132-12/132=1/132
