## Algebra 1

$r = 1$ or $r = -5$
$4 + abs(r+2) = 7$ $4 + abs(r+2) -4 = 7-4$ $abs (r + 2 ) = 3$ $r + 2 = 3$ or $r + 2 = -3$ $r + 2 = 3$ $r + 2 -2 = 3 -2$ $r = 1$ $r + 2 = -3$ $r+2 -2 = -3 -2$ $r = -5$