I will mark the brainiest!

What does x = in this equation x+3+2x=x+5

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 ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)