Question

4x - 5y = 15
2x - y = 9
5. In the system of equations shown above, what is the value of 3x – 3y?
A) 9
B) 12
C) 15
D) 24

Answer 1

solution is (5,1)
3(5) - 3(1)
15 - 3 = 12
the answer is B