Solve the system by substitution.
2x+y=-11
3x-4=11
First isolate y in the first equation:
y = -2x - 11
Then substitute this into the second equation:
3x - 4 = 11
3x = 15
x = 5
Now substitute x back into y = -2x - 11:
y = -2(5) - 11
y = -10 - 11
y = -21
Therefore, the solution to the system of equations is x = 5 and y = -21.