Question

Solve the system of equations 8x- 3y =9 4x -4y=-8

Answer 1

2

Explanation:

1=1=2

Answer 2

x = 3, y = 5.

Explanation:

8x - 3y = 9

4x - 4y = -8

multiply the second equation by 2:

8x - 8y = -16

Subtract this from the first equation:

5y = 25

y = 5.

Substitute for y in equation 2:

4x - 4(5) = -8

4x = -8 + 20 = 12

x = 12/4 = 3.