(46*2/15)*15/23 (5/16*13/18)*(18/26*16/25) 32/33*52/53*(53/52*33/34 55*7/11-55*6/11

(46*2/15)*15/23=46*2/15*15/23=4 (5/16*13/18)*(18/26*16/25)=5/16*13/18*18/26*16/25=1/10 32/33*52/53*(53/52*33/34)=32/33*52/53*53/52*33/34=32/34 55*7/11-55*6/11=55*7/11-55*6/11=5*7-5*6=35-30=5 12/19*23/15 — 12/19*4/15=276/285-48/285=228/285=4/5 47/11*1/2 — 25/11*1/2=47/22-25/22=22/22=1