Respuesta :

ananyababa
4x - 2x is 2x. If we have 4 x's, and we take away 2 x's, we have 2 x's left. I hope this helps!

blcreativeman
Here is an explanation:
[tex]4x-2x = 4(x) - 2(x) = (4-2)(x) = 2(x) = 2x. [/tex]
You could also think of this as:
( x + x + x + x ) - ( x + x ) = x + x + x + x - x - x