Answer:
The correct option is 2.
Explanation:
The given system of equations is
.... (1)
..... (2)
Substitute the value of x from equation (2), in equation (1).

On simplification, we get


The value of xis 10 and the value of y is -20. So, the solution of the given system of equation is (10,-20).
Therefore the correct option is 2.