Answer:
x = 20
Step-by-step explanation:
3x - 10 = x + 30
2x = 40
x = 20
B is the answer
i simplified the theorem, but i hope this makes sense!
Answer:
7
9
Step-by-step explanation:
key is the number of letters in each word
Y = -2 x - 9
3 x - 4(-2 x - 9 ) = -8
3 x + 8 x + 36 = - 8
11 x = - 44, x = - 4
y = 8 - 9 , y = -1
This is a unique solution, the system is independent.