Oliver is playing a game with his friends. Each player gets 7 pieces. In all, there are 70 pieces on the game board.
Which number sentence can be used to find the number of people playing the game?
Let N be the number of people playing the game.
The total number of pieces given to the players is 7N.
According to the problem, 70 pieces were given to the players.
Therefore, the number sentence is: 7N = 70