I need help with other question b, with explanation please

Answer:
[tex]96 - 14[/tex]
Step-by-step explanation:
Given
[tex]Digits: 6\ 1\ 9\ 4[/tex]
Required
Fill in the blanks to get the largest subtraction
The largest subtraction is the difference between the highest possible value and the least possible value.
From the 4 given digits.
We have:
[tex]Highest = 96[/tex]
[tex]Least = 14[/tex]
So, the blanks become:
[tex]96 - 14[/tex]
And the difference is:
[tex]82[/tex] --- possible largest