Sagot :
[tex]\frac{3}{4}-\frac{1}{6}=\frac{3 \times 3}{4 \times 3}-\frac{1 \times 2}{6 \times 2}=\frac{9}{12}-\frac{2}{12}=\frac{9-2}{12}=\frac{7}{12}[/tex]
[tex] \frac{3}{4}- \frac{1}{6} = \frac{3\cdot3}{4\cdot3} - \frac{1\cdot2}{6\cdot2} = \frac{9-2}{12} [tex]= \boxed {\frac{7}{12} }[/tex]