23.32-(13.49+2.68)=?简便运算

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23.32-(13.49+2.68)=?简便运算23.32-(13.49+2.68)=?简便运算23.32-(13.49+2.68)=?简便运算错了是23.32-(13.49-2.68)=23.32+

23.32-(13.49+2.68)=?简便运算
23.32-(13.49+2.68)=?简便运算

23.32-(13.49+2.68)=?简便运算
错了
是23.32-(13.49-2.68)
=23.32+2.68-13.49
=26-13.49
=12.51