Respuesta :
there are a couple of ways to do this...
(1) subtract 18 from both sides, then divide both sides by -2
(2) subtract 8 from both sides, add 2x to both sides, then divide by 2
(1) subtract 18 from both sides, then divide both sides by -2
(2) subtract 8 from both sides, add 2x to both sides, then divide by 2