в) -4 + 7/8 - 3/4 + 9 = -4 + 0.875 - 0.75 + 9 = -4 + 0.125 + 9 = 5.125
г) -4/5 - 8 + 13 + 3/10 = -0.8 - 8 + 13 + 0.3 = -0.8 - 8 + 13 + 0.3 = 4.5.
в) -4 + 7/8 - 3/4 + 9 = -4 + 0.875 - 0.75 + 9 = -4 + 0.125 + 9 = 5.125
г) -4/5 - 8 + 13 + 3/10 = -0.8 - 8 + 13 + 0.3 = -0.8 - 8 + 13 + 0.3 = 4.5.