((1/4+1/2) ÷ 4/5) x 8/9-5/6+1/5 x 3/8 (the 1/4 1/2, etc. are fractions, the x is multiply. I know you can use *, but Its easier to use x.)
Well .....just convert it.....you do know how to do that, yah?
-725/1000
-29/40
You can do these problems very easily yourself, here is screenshot of your problem solved by Web2 calculator: (even shows your required fraction)