Question

6 = -4x + y
-5x - y = 21
Please Help Fast!!!!!! Substitution

Answer 1

y = 4x + 6

-5x - 4x - 6 = 21

-9x - 6 = 21

-9x = 27

x = -3

y - 4(-3) = 6

y + 12 = 6

y = -6

(-3, -6)