Вычислите1)(1/4-2/3)*(4/5-2/15)*(-3/5) ; 2)(1/6-5/9)*(1/2-3/7)*7целых1/5; 3)(5/6-2/3)*(7/8-1/2)*(-4)

(1/4-2/3*(4/5-2/15)*(-3/5) 1/4 - 2/3 = 3/12 - 4/12 = -1/12 4/5 - 2/15 = 12/15 - 2/15 = 10/15 = 2/3 -1/12*2/3 = -1/18 -1/18*-3/5 = 1/30 Вот только 1