Question

19. Solve: 3x + y = 15
2x - y = 5​

Answer 1

Step-by-step explanation:

1) 3x+y=15

2x-y=5

These two answer will not change because they do not have same coefficient....

Answer 2

After Adding both the equation we get 5x=20
So x=4.
Putting the value of x in equation 1 we get y=3.
So answer will be x=4;y=3;