Chapter 2 - Solving Equations - 2-3 Solving Multi-Step Equations - Practice and Problem-Solving Exercises - Page 98: 50

$n=-71/12$

Recall, if terms are like terms, we can add or subtract these terms just like we add or subtract numbers. Thus, because 2/3 and 6 are like terms, we can add them to simplify the equation to $n+ 20/3=3/4$. We write the two fractions with common denominators to get that $n+80/12=9/12$. We subtract $80/12$ on both sides to get that $n=-71/12$.