What’s wrong with this

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

Pls! does anybody know a shortcut for answering these types of questions in the future?

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.