Use substitution and substitute y into the other equation. One of the equations already gives you y in terms of x, so use that and substitute it into the other equation. y = 3x - 4
Plug into the other equation: -3y = -9x + 12
-3(3x-4) = -9x + 12
-9x + 12 = -9x + 12
This is an identity. So that means that any value of x makes this equation true. So B.
50+20=70
Have a great day:)
Answer:38
Step-by-step explanation:
you put 3 in front of 8 and you get 38
You can add 754 7 times, or just multiply regularly.
