Answer:
7x or 5X+2x
Step-by-step explanation:
7x: Combine all of the common variables in the expression to create 7x.
4x+x+2x ---> Combine 4x and x.
5x+2x ---> Combine 5x and 2x.
7x = Answer 1
5X+2x: Combine all of the common variables in the expression to get the new expression of 5X+2x.
4X+X+2x ---> Combine 4X and X to leave 2x by itself.
5X+2x = Answer 2
