Номер 65.

а) 12/35 = (2*2*3)/(5*7)

сократить невозможно

б) 48/100 = (2*2*2*2*3)/(2*2*5*5) = (2*2*3)/(5*5) = 12/25 = 0,48

в) 105/125 = (3*5*7)/(5*5*5) = (3*7)/(5*5) = 21/25 = 0,84

г) 24/36 = (2*2*2*3)/(2*2*3*3) = 2/3

д) 56/100 = (2*2*2*7)/(2*2*5*5) = (2*7)/(5*5) = 14/25 = 0,56

е) 225/300 = (3*3*5*5)/(2*2*3*5*5) = 3/(2*2) = 3/4 = 0,75

ж) 123/321 = (3*41)/(3*107) = 41/107

з) 111/132 = (3*37)/(3*11*2*2) = 37/(11*2*2) = 37/44