Respuesta :
					                   3x and 4x would be like terms since they both have the same variable. 
					                
					                
					             
					                   For example, we have 3x+4y-6x+7y
Looking at the example, we know that 3x-6x are like terms because they have x. That also equal for 4y+7y.
So, we have -3x+11y.
					                
					             Looking at the example, we know that 3x-6x are like terms because they have x. That also equal for 4y+7y.
So, we have -3x+11y.
 
			                  