[tex]1\frac{1}{2} *1\frac{1}{3}=\frac{3}{2}*\frac{4}{3}=\frac{3*4}{2*3} =\frac{12}{6}=2\\4\frac{1}{7}*3=\frac{29}{7} *\frac{3}{1} =\frac{29*3}{7}=\frac{87}{7}=12\frac{3}{7}[/tex]
