5/12*(4,8x - 1 1/3y) - 3 1/9*(0,75x - 11/20 y) = 5/12*(4,8x - 4/3 y) - 28/9*(3/4 x-11/20 y) = 2x-5/9 y-7/3 x+77/45 y = -1/3 x - 25/45 y+ 77/45 y = -1/3 x + 52/45 y = 1 7/45 y - 1/3 x
5/12*(4,8x - 1 1/3y) - 3 1/9*(0,75x - 11/20 y) = 5/12*(4,8x - 4/3 y) - 28/9*(3/4 x-11/20 y) = 2x-5/9 y-7/3 x+77/45 y = -1/3 x - 25/45 y+ 77/45 y = -1/3 x + 52/45 y = 1 7/45 y - 1/3 x