## Precalculus (6th Edition)

$-7x+28y$
RECALL: The distributive property states that for any real numbers $a, ,$ and $c$, $a(b-c) = ab-bc$ Use the distributive property to have: $-7(x-4y) \\=-7(x) -(-7)4y) \\=-7x-(-28y) \\=-7x+28y$