Lewa’s hiking backpack weighs 5 pounds less than 1/2 the of alani’s hiking backpack. write an expression to describe the weight of lewa’s backpack. how many pounds does lewa’s backpack weigh if alani’s backpack weighs 36 pounds?

Julius went on a volunteer trip to centralamerica and took medical supplies with him.he packed a bag with 50 pounds of supplies.he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?