Answer: [tex]-1/24[/tex]
Switch operations
Keep: -7/8
Change: - into +
Change: -5/6 into 5/6
New Problem: -7/8+5/6
Find LCD
(-7/8×3/3) + (5/6×4/4) = -21/24+20/24
Add
-21+20/24+=-1/24
Therefore
-7/8-(-5/6)=-1/24
