Question

7x+2y=24, -8x-2y=-30

Answer 1

x= 6, y = -9

Explanation:

7x+2y=24,

-8x-2y=-30

Add the two equations together to eliminate y

7x+2y=24

-8x-2y=-30

----------------------

-x +0y = -6

Divide each side by -1

x = 6

Now solve for y

7x+2y = 24

7*6 +2y = 24

42 +2y = 24

Subtract 42 from each side

42-42 +2y = 24-42

2y =-18

Divide each side by 2

2y/2 = -18/2

y = -9