Respuesta :

Answer:

D

Step-by-step explanation:

  Step by step:

 | add  1*x to  3*x

4+3*x+6=6+4*x  | -4*x

6=6  

8555cashio
D is the correct answer because when you combine like terms on the first side of the equals sign it would be :
4x+6=6+4x which is EXACTLY the same thing so it will not matter what you plug into x on both sides therefore it has infinite solutions
Answer D