计算 -5/3x(0.5-2/3)÷(-7/6)
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计算 -5/3x(0.5-2/3)÷(-7/6)
计算 -5/3x(0.5-2/3)÷(-7/6)
计算 -5/3x(0.5-2/3)÷(-7/6)
-5/3x(0.5-2/3)÷(-7/6)
=(3/6-4/6)x(-5/3)x(-6/7)
=-1/6x10/7
=-5/21
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