Сократите (буквами обозначены натуральные числа): 1) 6а/18а; 3) 96с/72с; 5) 39mn/91mn; 2) 32b/60; 4) 45/9d; 6) 95ab/38bc.

1) 6а/18а = 1*1 / 3*1 = 1/3; 2) 32b/60 = 8b/15; 3) 96с/72с =4*1 / 3*1 = 4/3 = 1 1/3; 4) 45/9d = 5/1*d = 5/d; 5) 39mn/91mn = 3*1*1/7*1*1 = 3/7; 6) 95ab/38bc = 5a*1/2*1c = 5a/2c.