Andre and Elena are solving this system of equations.
Y=3x
Y=9x-30
Andre’s first step is to create a new system:
3y=9x
Y=9x-30
Do you agree with either first step?

A-both strategies work
B-only the first strategy works
C-only the second strategy works
D-neither strategies work.

Answer:

A-both works

Step-by-step explanation:

one can simply sub into the second equation from the first step's one and remove an unknown, making it easy to solve

Please help me and make sure to round the answers to the nearest hundred. I’ll give you brainiest!