#### Answer

-5x+10y

#### Work Step by Step

-$\frac{5}{2}$(2x-4y)
To rewrite this without parenthesis, Use the Disributive Property
-$\frac{5}{2}$ $\times$$\frac{2}{1}$$\times$x - (-$\frac{5}{2}$)$\times$$\frac{4}{1}$$\times$y
-$\frac{10}{2}$x+$\frac{20}{2}$y
When a minus sign is next to a negative term, they both cancel out and become a positive.
Simplify
-5x+10y