5/9+2/3,1/12+3/4 , 1/2+3/8,17/1000+81/100

[latex]\frac{5}{9} + \frac{2}{3} = \frac{5+2*3}{9} = \frac{11}{9} =1 \frac{2}{9} \\ \\ \\ \frac{1}{12} + \frac{3}{4} = \frac{1+3*3}{12} = \frac{10}{12} = \frac{5}{6}[/latex] [latex] \frac{1}{2} + \frac{3}{8} = \frac{4+3}{8} = \frac{7}{8} \\ \\ \\ \frac{17}{1000} + \frac{81}{100} = \frac{17+810}{1000} = \frac{827}{1000} [/latex]