## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$18x+30y$
Using $a(b+c)=ab+ac$ or the Distributive Property, the given expression, $6(3x+5y)$, is equivalent to \begin{array}{l}\require{cancel} 6(3x)+6(5y) \\\\= 18x+30y .\end{array}