如题所述
第1个回答 2020-08-11
1/6÷(-5)*(-5/7 )
= -1/6×(-1/5)×(-5/7)
= -1/6×1/7
= -1/42
-3.5÷7/8*(-3/4)
= -3.5×8/7× (-3/4)
= -4× (-3/4)
=3
= -1/6×(-1/5)×(-5/7)
= -1/6×1/7
= -1/42
-3.5÷7/8*(-3/4)
= -3.5×8/7× (-3/4)
= -4× (-3/4)
=3
如题所述
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