Maurice puts 130 trading cards in protector sheets.He fills 7 sheets and puts the remaining 4 cards in the eighth sheet.Each of the filled sheets has the same number of cards.How many cards are in each filled sheet?
Let x represent as the number of cards in 1 sheet. So... 7x means 7 times the number of cards that go in a sheet. 7x+4 means that there are four cards left. 7x+4 = 130 7x+4-4 = 130-4 (if you do something to one side, you have to do the exact same thing to the other side) So... 7x = 126 7x/7 = 126/7 x = 18 when you divide both sides by 7 you get x by itself. That means 18 trading cars go in a sinle sheet with only four cards going in the eighth sheet.
