Adding a negative fraction B to another fraction A means subtracting the number part of it (that means leaving the minus sign) to A
For example if we have to add 5/6 and -1/3, this means, subtracting 1/3 from 5/6 or 5/6-1/3. The latter is equal to 5/6-2/6=(5-2)/6=3/6=(1cancel3)/(2cancel6)=1/2
Hence 5/6+(-1/3)=1/2.
Subtracting a negative fraction B from another fraction A means adding the number part of it (that means leaving the minus sign) to A.
For example if we have to subtract -3/8 from -1/4 means, adding 3/8 to -1/4 or -1/4+3/8 and as -1/4 equal to -2/8, -1/4+3/8=-2/8+3/8=(-2+3)/8=1/8
Hence -1/4-(-3/8)=-1/4+3/8=1/8.
