Respuesta :
					                   I reckon it would be C.. if you usually have a number beside a letter it usually means multiply them together (I think) 
6 + 4 n = 18
(I think n = 3. 4 x 3 = 12. 12 + 6 = 18)
					                
					             6 + 4 n = 18
(I think n = 3. 4 x 3 = 12. 12 + 6 = 18)
 
			                  