2x - y - 4 = 0

3x + y - 9 = 0

Step-by-step explanation:

add up both equations

2x - y + 3x + y - 13 = 0 (y will eliminate - y)

5x - 13 = 0

5x = 13

x = 13/5 now use this value to find y

2 * 13/5 - y - 4 = 0

26/5 - y - 4 = 0

26/5 - 4 = y

6/5 = y