сократите: а) 54/72; 75/120; 17/51; 150/180; б) 18*13/39*6; 6*35/42*12.

а)54:72=27:36=8:12=2:375:120=15:24=5:817:51150:180=15:18=5:6б)18*13:39*6=18*1:3*6=18:18=16*35:42*12=1*35:42*2=35:84

54/72= 3/4= 0,7575/120 = 5/8=0,62517/51=1/3 = 0,3(3)150/180=5/6=0,83(3)18*13/39*6= 16*35/42*12= 35/84