2/9+(5/6-1/3) 简便计算

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2/9+(5/6-1/3)简便计算2/9+(5/6-1/3)简便计算2/9+(5/6-1/3)简便计算2/9+(5/6-1/3)=2/9+(5/6-2/6)=2/9+1/2=4/18+9/18=13/

2/9+(5/6-1/3) 简便计算
2/9+(5/6-1/3) 简便计算

2/9+(5/6-1/3) 简便计算
2/9+(5/6-1/3)
=2/9+(5/6-2/6)
=2/9+1/2
=4/18+9/18
=13/18

2/9+(5/6-1/3) 简便计算
= 2/9-1/3 +5/6
= 5/6 - 1/9
= ( 15 - 2) /18
= 13 / 18