Question

Find the solution of the system of equations. 3x+y=-15
3x+2y=-18

Answer 1

(x, y) ==> (-4, -3)

Explanation:

-2(3x + y = -15) ==> -6x - 2y = 30

3x + 2y = -18

-6x - 2y = 30

3x + 2y = -18

-3x = 12

/-3 /-3

x = -4

Now, we solve for y:

-6x - 2y = 30

-6(-4) - 2y = 30

24 - 2y = 30

-24 -24

-2y = 6

/-2 /-3

y = -3

(x, y) ==> (-4, -3)

Hope this helps!