51/8 - 4 1/5=

The first step for solving this expression is to subtract the whole numbers and the fractional parts of the mixed numbers separately. This process will look like the following:
(5 - 4) + ( - )
Now subtract the numbers in the first parenthesis.
1 + ( - )
Then subtract the fractions in the second parenthesis.
1 + 0
Since we are adding 1 to 0,, the quantity will not change so our final answer is going to be 1.
Let me know if you have any further questions.
:)