#### Answer

$\frac{1}{4}=n$

#### Work Step by Step

We start with the given equation: $7=-2(4n-4.5)$
We apply the distributive property to simplify the right side of the equation: $7=-8n+9$
We subtract $9$ from both sides of the equation: $$7-9=-8n+9-9$$$$-2=-8n$$
We divide by $-8$ on each side of the equation: $$\frac{-2}{-8}=\frac{-8n}{-8}$$$$\frac{1}{4}=n$$