8/9-(2/9+1/3)用简便方法算是怎样算？

8/9-(2/9+1/3)用简便方法计算结果等于1/3。 解：8/9-(2/9+1/3) =8/9-2/9-1/3 =(8/9-2/9)-1/3 =(8-2)/9-1/3 =6/9-1/3 =6/9-3/9 =(6-3)/9 =3/9=1/3 即8/9-(2/9+1/3)等于1/3。 扩展资料： 1、