1/3+1/2=5/6 and 1/4+1/3=7/12

[latex]\frac{1}{3}+\frac{1}{4}=\frac{4}{12}+\frac{3}{12}=\frac{7}{12}\\ \\ \\\frac{1}{3}+\frac{1}{2}=\frac{2}{6}+\frac{3}{6}=\frac{5}{6}[/latex]