How can we represent 9 less than the number m?

Two lines parallel to the same plane are parallel to eachother

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

James is playing his favorite game at the arcade. after playing the game 33 times, he has 88 tokens remaining. he initially had 2020 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays