5/7+1/2=(10+7)/14=17/14
3/26+5/39=(9+10)/78=19/78
7/20+1/15=(21+4)/60=25/60=5/12
8/11+5/8=(64+55)/88=119/88
7/13+2/11=(77+26)/143=103/143
3/22+2/33=(9+4)/66=13/66
7/60+13/540+9/20=(63+13+243)/540=319/540
52/105+7/95+61/63=(2964+441+5795)/5985=9200/5985=1840/1197