2[x-(-3x + a)] = 4x2(x + 3x - a) = 4x4x - a = 2x2x = ax = a/2(x + 1)/4 - 6(x - a) = 5/4x + 1 - 24(x - a) = 5x + 1 - 24x + 24a = 523x = 24a - 4x = (24a - 4)/23因为有相同的解所以 a/2 = (24a - 4)/2323a =...