Answer:
2,000,000+100,000+7,000+ 900+50+4
Step-by-step explanation: Can i have brainliest?
3x - 1 = 3x -1 because it's reflecting itself
5x-7y
4x and x combine to get 5x.
-5y and -2y combine to get -7y.
This is all done using the like terms method.
B I assume, not 100% sure