ccalhoun437 ccalhoun437 03-05-2020 Mathematics contestada The equations in this system were added to solve for y. What is the value of y?x + 6 y = 10. -x + 3 y = -15. Equals 9 y = -5.A) y = -9/5B) y = -5/9C) y = 5/9D) y = 9/5