Answer: x= -12
Step-by-step explanation: 1. I assumed that the system was actually two equations: x = 4-2y and x + 3y = 12.
2. From there I took the value of x in the first equation and placed it into the second equation to get 4 - 2y + 3y = 12
3. This gets us to 4 + y = 12 and thus y = 8.
4. Put that value back into the first equation and you have x = 4 - 2(8) = 4 - 16 = -12.
