Could someone simplify this expression for me? It’d be very helpful :)

Which expressions are equivalent to 6 +(-x) + 2x + (-7) +2x? Check all that apply.

A. x+x+6-7+x

B. 2x+2+x

C. 3-x+ 2x - 4 + 2x

D. x-1

E. x + 1