-8,3-6 1/3 -8,3-(-2 4/15)
-8,3-6 1\3=-8 3\10-6 1\3=-8 9\30-6 10\30=-14 19\30
-8,3-(-2 4\15)=-8 3\10+2 4\15=-8 9\30+2 8\30=-6 1\30