HELP ASAP PLS bottom u have to pick less or more

What is the solution of the systems of equations? y=2/3x+3 x=-2

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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.