5/6-1/2+1/4=7/125/12+3/4-5/8=13/242/3+5/8-1/2=1/44/5-(1/4+3/8)=7/401/6-(1/2-1/3)=09/5-7/12+1/6=83/60
7/12;43/24;19/24;37/40;-2/3;83/60
