Which expression is equivalent to 10f - 5f + 8 +6g +4

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Two parallel lines are crossed by a transversal. what is value of x

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 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