Respuesta :
					                   use the distribution property and multiply 7 to x and -4 to get 
7x-28 = 84
then add 28 to both side
7x= 112
then divide 7 to both side to get
x= 16
					                
					             7x-28 = 84
then add 28 to both side
7x= 112
then divide 7 to both side to get
x= 16
					                   you have to distribute, then subtract, then divide by the remaining on both sides for everything except for the distribution 
					                
					                
					              
			                  