Выполните вычитание а) -5/8-(-7/12)= б)38-(-16)= в)-7 7/24 - 4 13/16 г)5/9-2= д)-18,9-36.4 е)

а) -5/8 - (-7/12) = -5/8 + 7/12 = -5 * 3/24 + 7 * 2/24 = -15/24 + 14/24 = (14 - 15)/24 = -1/24;

б) 38 - (-16) = 38 + 16 = 54;

в) -7 7/24 - 4 13/16 = -(7 * 24 + 7)/24 - (4 * 16 + 13)/16 = -(168 + 7)/24 - (64 + 13)/16 = -175/24 - 77/16 = -2 * 175/48 - 3 * 77/48 = -350/48 - 231/48 = -(350 + 231)/48 = -581/48;

г) 5/9 - 2 = 5/9 - 18/9 = -13/9;

д) -18,9 - 36,4 = -55,3.