3 1/12+2 4/15 помогите вспомнить
3 1/12 + 2 4/15 = 5 7/20 3 1/12 + 2 4/15 = 37/12 + 34/15 НОК(12,15) = 60 (37*5 + 34*4)/60 = (185 + 136)/60 = 321/60 = 107/20 = 5 7/20