вычисли (1 1/4х2/5+3 3/7:9/14):5/12-10 1/5

(1 1/4 * 2/5 + 3 3/7 : 9/14) : 5/12 - 10 1/5 = (5/4 * 2/5 + 24/7 : 9/14) : 5/12 - 51/5 = (2/4 * 5/5 + 24/7 * 14/9) : 5/12 - 51/5 = (1/2 * 1 + 14/7 * 24/9) : 5/12 - 51/5 = (1/2 + 2 * 8/3) : 5/12 - 51/5 = (3/6 + 32/6) : 5/12 - 51/5 = (3 + 32)/6 : 5/12 - 51/5 = 35/6 : 5/12 - 51/5 = 35/6 * 12/5 - 51/5 = 12/6 * 35/5 - 51/5 = 2 * 7 - 51/5 = 14 - 51/5 = 70/5 - 51/5 = (70 - 51)/5 = 19/5 = 3 4/5 = 3 8/10 = 3,8Ответ: 3,8