(5/16+1/2)×4=
(3/5-1/6)×7=

(3/5-1/6)×7=(ПЕРВЫЙ ПРИМЕР)(5/16+1/2)×4= 1 1/41) 5/16 + 1/2 = 10/32 + 16/32 = 26/32 = 13/16 НОК(16,2)= 2*2*2*2*2 =3216 = 2 2 2 22 = 22) 13/16*4= 13/16*4/1 = 13/4 = (13:4= 2 целых 5 4-ых) = 2 5/4 = 1 1/4.(ВТОРОЙ ПРИМЕР)(3/5-1/6)×7= 3 3/901) 3/5-1/6= 54/90 - 15/90 = 39/90НОК(5,6) = 5*6*3= 905=56=6*32) 39/90* 7=  273/90 = (273 : 90= 3 целых 3 90-тых) = 3 3/90.