а) 12.8 0.25 : (0.125 - 3/4) = 12.8 0.25 : (0.125 - 0.75) = 12.8 * 0.25 : -0.625 = -3.2
б) (1.5 + 2 2/3 + 3 3/4) 3.6 / (15 1/8 : 2 - 14) = (1.5 + 8/3 + 15/4) 3.6 / (121/8 - 14) = (1.5 + 2.6667 + 3.75) 3.6 / (15.125 - 14) = 8.9167 3.6 / 1.125 = 32.1 / 1.125 = 28.5333
а) 12.8 0.25 : (0.125 - 3/4) = 12.8 0.25 : (0.125 - 0.75) = 12.8 * 0.25 : -0.625 = -3.2
б) (1.5 + 2 2/3 + 3 3/4) 3.6 / (15 1/8 : 2 - 14) = (1.5 + 8/3 + 15/4) 3.6 / (121/8 - 14) = (1.5 + 2.6667 + 3.75) 3.6 / (15.125 - 14) = 8.9167 3.6 / 1.125 = 32.1 / 1.125 = 28.5333