(I really need help pl) Translate and solve the following equation: Six times the difference of two and twice a number, increased by three times a number is negative fifteen.

Anew movie is released each year for 14 years to go along with a popular book series. each movie is 2 minutes longer than the last to go along with a plot twist. the first movie is 70 minutes long. use an arithmetic series formula to determine the total length of all 14 movies