The correct option is 1.
Step-by-step explanation:
The system of equations is
....(1)
....(2)
Multiply equation (1) by 11.
....(3)
Multiply equation (2) by 6.
....(4)
Subtract equation (4) from equation (3).
![55x+66y-54x-66y=220-192](/tpl/images/0218/7855/694d5.png)
![x=28](/tpl/images/0218/7855/ae153.png)
Substitute x=28 in equation (1).
![5(28)+6y=20](/tpl/images/0218/7855/e1ec8.png)
![140+6y=20](/tpl/images/0218/7855/6af29.png)
![6y=-120](/tpl/images/0218/7855/81534.png)
![y=-20](/tpl/images/0218/7855/05b7c.png)
Therefore the solution of the given system of equations is (28,-20). Option 1 is correct.