Respuesta :
					                   6/12+3/12 = 9/12 
To simplify you divide both the denominator and nominator by 3.
9/12 = 3/4
					                
					             To simplify you divide both the denominator and nominator by 3.
9/12 = 3/4
					                   The fraction simplify to 9-12 but then it still simplify buy dividing the top and bottom number by 3. So your finally answers is 3/4
					                
					                
					             