6 целых 7/12*6+5 целых 1/10*5=?
1)6 7/12 × 6 = 79/12 × 6 = 79/2 = 39 1/2 2)51/10 × 5 = 51/2 = 25 1/2 3) 39 1/2 + 25 1/2 = 79/2 + 51/2 = (79 + 51)/2 = 130/2 = 65 ответ 65