Answer:
x = -3
y = 6
Step-by-step explanation:
We have to solve the system

by putting the value of the first equation into the second gives

which upon simplification gives


With the value of x in hand, we now use the second equation to find the value of y.


Hence, the value of y is 6.
Therefore, our solution to the system is
x = -3 and y = 6.