简便方法计算：(1/51-2/87)除以1/29+22除以51

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答案和解析

(1/51-2/87)÷1/29+22/51
=(1/51-2/87)×29+22/51
=1/51×29-2/87×29+1/51×22
=1/51×（29+22）-2/87×29
=1/51×51-2/3
=1-2/3
=1/3

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