A mail truck picks up two boxes of mail from the post office. The total weight of the boxes is 38 pounds. One box is 4 pounds heavier than the other box.
x = one of the box x + 4 = second both 38 = total weight(pounds) Now combine them x + x + 4 = 38 2x = 34, x = 17 17 + 4 = 21 (second box) One box weights 17 pounds and the other weighs 21 pounds
