(1/2 - 5/9 + 5/6 - 7/12)÷(-1/36)

问题描述:

(1/2 - 5/9 + 5/6 - 7/12)÷(-1/36)

(1/2 - 5/9 + 5/6 - 7/12)÷(-1/36)
=(18/36-20/36+30/36-21/36)×(-36)
=-18+20-30+21
=-7;
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