Answer:
(-3,-6)
Step-by-step explanation:
You need to solve for the system of equations.
-4x+y=6
-5x-y=21
y=6+4x
-5x-(6+4x)=21
-5x-6-4x=21
-5x-4x=21+6
-9x=27
-9x÷9=27÷9
x=3
=6+4(3)
=18
