Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapters 1-4 Cumulative Review Problem Set - Page 186: 6

$14n-5$

Using the Distributive Property and combining like terms, the given expression, $ 6n+3(4n-2)-2(2n-3)-5 ,$ simplifies to \begin{array}{l}\require{cancel} 6n+12n-6-4n+6-5 \\\\= (6n+12n-4n)+(-6+6-5) \\\\= 14n-5 .\end{array}