Question

What is the distance,in units,from -7 to 2 in a number line

Answer 1

$\bf \underset{\textit{\Large 7+2 = 9}}{\boxed{-7}\stackrel{\textit{7 units}}{\rule[0.35em]{15em}{0.25pt}}0\stackrel{\textit{2 units}}{\rule[0.35em]{8em}{0.25pt}}\boxed{2}}$