1003. Выполните вычитание.

1) 5/9 - (-1/6) = 5/9 + 1/6 = 10/18 + 3/18 = 13/18; 2) 3/16 - 11/24 = 9/48 - 22/48 = -13/48; 3) -3/10 - 4/15 = -9/30 - 8/30 = -17/30; 4) -7/9 - 2/15 = -35/45 - 6/45 = -41/45; 5) -11/20 - (-2/15) = -33/60 + 8/60 = -25/60 = -5/12; 6) -14/25 - (-7/10) = -14/25 + 35/50 = -28/50 + 35/50 = 7/50; 7) 2 3/7 - (-1 2/5) = 2 3/7 + 1 2/5 = 17/7 + 7/5 = 85/35 + 49/35 = 134/35 = 3 29/35; 8) 5 12/35 - 10 = -5 + 12/35 = -4 23/35.