## Intermediate Algebra (12th Edition)

$|-11|-|-5|-|7|+|-2|=(11)-(5)-(7)+(2)=11-5-7+2=6-7+2=6+(-7)+2=-1+2=2-1=1$ Recall that $|a|=-a$ if $a\lt0$ and $|a|=a$ if $a\geq0$.