Can someone help me? (look at image)

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

What number is 7 units left of -15?

What is the value of x in the equation7x+2y=48 when y=3