(-47.65)*2又6/11+(-37.15)*(-2又6/11)+10.5*(-7又5/11)
=2又6/11*(-47.65+37.15)+10.5*(-7又5/11)
=2又6/11*(-10.5)+10.5*(-7又5/11)
=10.5*(-2又6/11-7又5/11)
=10.5*(-10)
=-105
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).
数学人气:716 ℃时间:2019-10-26 22:05:40
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