-(2/13-1/3-1/6)*78等于多少?请写出计算过程
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-(2/13-1/3-1/6)*78等于多少?请写出计算过程
-(2/13-1/3-1/6)*78等于多少?
请写出计算过程
-(2/13-1/3-1/6)*78等于多少?请写出计算过程
=-[(2/13)*78-(1/3)*78-(1/6)*78]
=-[12-26-13]
=27