Chapter 11 - Rational Expressions and Functions - 11-2 Multiplying and Dividing Rational Expressions - Practice and Problem-Solving Exercises - Page 674: 38

$\frac{3}{x}, with$ $x\ne0,-3$

Given : $\frac{3x+9}{x} \div (x+3)$ This becomes : $\frac{3(x+3)}{x} \times \frac{1}{x+3}$ $= \frac{3(x+3)}{x} \times \frac{1}{x+3}= \frac{3}{x} $ (After dividing out the common factor (x+3))