Answer: 1/24
Step-by-step explanation: To subtract unlike fractions, our first step is to get a common denominator for those fractions.
The common denominator of 8 and 6 will be the
least common multiple of 8 and 6 which is 24.
To get a 24 in the denominator of 7/8, we
multiply top and bottom by 3 to get 21/24.
To get a 24 in the denominator of 5/6, we
multiply top and bottom by 4 to get 20/24.
So we have 21/24 - 20/24 which is 1/24.