y, если -y=20;-4,05;12 3/5;8 1/4
Y=-20 y=4,05 y=-12,3/5 y=-8,1/4
-y = 20 -y = -1 * (-20) -1 * (-y) = -1 * (-1) * (-20) y = 1 * -20 y = -20 -y = -4,05 y = 4,05 -y = 12 y = -12 -y = 8 y = -8