Appendix A - Equations and Inequalities - Page 418: 91

The equivalent interval notation is $(-5, 3)$.

$-5$ $\lt$ $5 + 2x$ $\lt$ $11$ $-5 - 5$ $\lt$ $2x$ $\lt$ $11 - 5$ $- \frac{10}{2}$ $\lt$ $x$ $\lt$ $\frac{6}{2}$ $-5$ $\lt$ $x$ $\lt$ $3$ The equivalent interval notation is $(-5, 3)$.