Сократите дроби по образцу: 21/56=? ; 144/120=? ; 156/128=? ; 396/240=? помогите
21/56 = 3/8 = 0,375 144/120 = 12/10 = 1,2 156/128 = 39/32(?) 396/240 = 132/80 = 1,65