решение примера х-3/20=4/5-1/2

x = -5/4 + 1/2 + 3/20 x = -10/8 + 4/8 + 6/40 x = -6/8 + 4/8 + 3/20 x = -2/8 + 3/20 x = -1/4 + 3/20 x = -5/20 + 3/20 x = -2/20 x = -1/10