Seven and one third minus three and one half = 23/6 or 35/6
eighty two and a half
One half is nine eighteenths. Nine eighteenths minus three eighteenths is six eighteenths, which is also one third.
Three-sixths minus two-sixths is one-sixth.
1.75 or one and three quarters
It is: -2.5 minus 0.75 = -3.25
One and a half minus one and a half is zero.