how do i solve this question is really hard

Answer:
Hey are you trying to find the vaule of x?
Step-by-step explanation:
Answer:
x = -2
Step-by-step explanation:
This is rather easy, you just need to replace y in the second equation with -6.
Soooo... 3x - 6(-6) = 30
3x - -36 = 30
3x + 36 - 36 = 30 - 36
3x = -6
x = -2