What is (-0.75x + 6) -(2.5x -1.9)

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers

Math question.. plz me .. best answer all