(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
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(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11)
=(-47.65+37.15)x2又6/11+10.5x(-7又5/11)
=-10.5x2又6/11+10.5x(-7又5/11)
=-10.5x(2又6/11+7又5/11)
=-10.5x10
=-105
=(-47.65+37.5)x2又6/11+10.5x(-7又5/11)
=-10.5x2又6/11-10.5x7又5/11
=-10.5x(2又6/11+7又5/11)
=-10.5x10
=-105
原式=
=-2又6/11x(47.65-37.15)+10.5x(-7又5/11).
=-2又6/11x10.5+10.5x(-7又5/11).
=-10.5×(2又6/11+7又5/11).
=-10.5×10
=-105
=-2又6/11*(47.65-37.15)-10.5*7又5/11
=-2又6/11*20.5-10.5*7又5/11
=-2又6/11*(10+10.5)-10.5*7又5/11
=-10.5*(2又6/11+7又5/11)-2又6/11*10
=-10.5*10-2又6/11*10
=10*(-2又6/11-10.5)
=-10*(28/11+21/2)
=-10*(56+231)/22
=-5*287/11
=-1435/11
=-130又5/11