Respuesta :

faizu
18 - 6/3
=> 18/1 - 6/3 ... they are unlike fractions becoz different denominators ...so we convert them into like fractions ...(LCM is 3 ) 
=>18/1 X 3 - 6/3
=> 54/3 - 6/3 
=> 48/3 
=> 16 

Hope it helps !!!