#### Answer

$-8y+4$

#### Work Step by Step

We are given the expression $(8-5y)-(4+3y)$.
This expression is equivalent to $(8-5y)-1\times(4+3y)$. We can use the distributive property and then combine like terms to simplify.
$8-5y-4-3y=(-(5y+3y))+(8-4)=-8y+4$