Question

What's the solution to the system of equations?

y = -3x - 2

5x + 2y = 15


A. (-40, 19)

B. (-19, 55)

C. (55, -19)

D. (19, -40)

Any help is appreciated :)

Answer 1

B. (-10, 55)

Explanation:

y=-3x-2

5x+2y=15

5x + 2(-3x-2)=15

5x + (-6x-4)=15

-x-4=15

+4 +4

-x=19, so x=-19

x=-19

y=-3x-2

y= -3 (-19)-2

y=57-2

y=55