One half
The only thing that makes 8 into one one half of thirteen is poor arithmetic.
minus one half
one half
One half minus 4 is -3.5.
We need to convert, and we can do so into fourteenths. One half is 7 fourteenths. One seventh is 2 fourteenths. 7 - 2 = 5, so the answer is 5 fourteenths, which cannot be simplified any further.
Thirteen/Fourteenths
The answer is One Seventh
Expressed as a proper fraction in its simplest form, 1/2 - 2/7 = 3/14 or three fourteenths.
One half
100/8 - 105/8 = -5/8
One and a half minus one and a half is zero.
Fourteenths (eight and seven)
One half minus one quarter is one quarter.
One half minus one fifth is 3 tenths
The only thing that makes 8 into one one half of thirteen is poor arithmetic.
Four minus one and a half is two and a half: 4 - 1.5 = 2.5