-23/36 + (-31/48) = -1104/1728 + (-1116/1728) = -2220/1728 = -185/144
7,2/9+(7/12)=9-7,2=2
12-7=5 5-2=3
-23/36 + (-31/48) = -1104/1728 + (-1116/1728) = -2220/1728 = -185/144
7,2/9+(7/12)=9-7,2=2
12-7=5 5-2=3