Question

Can someone help me with this?

Answer 1

1/18

Explanation:

First of all, it works well to consolidate the minus signs:

`=-(1)/(2)+(5)/(9)`

We can multiply the first fraction by 9/9 and the second one by 2/2 so they have a common denominator.

`=-(1)/(2)\cdot(9)/(9)+(5)/(9)\cdot(2)/(2)=((-1)(9)+(5)(2))/((2)(9))\\\\=\boxed{(1)/(18)}`