The sum of three consecutive integers is 9. What is the equation that represents the scenario? a. n + (n + 1) + (n + 2) = 9
b. n – (n + 1) – (n + 2) = 9
c. n + (n – 1) + (n – 2) = 9
d. n=9

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.