Марина Авдеева Ответ 1) 1 - 2x/(x-1) = 0 (x-1) - 2x = 0 (x-2x) - 1 = 0 x = 1 2) 3/m = m/3 m^2 = 9 m1 = +3 m2 = -3 3) 25/b - b = 0 25 - b^2 = 0 b^2 = 25 b1 = +5 b2 = -5