1.27*0.75-35*0.75-0.75怎样简算?

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1.27*0.75-35*0.75-0.75怎样简算?

1.27*0.75-35*0.75-0.75怎样简算?
1.27*0.75-35*0.75-0.75怎样简算?

1.27*0.75-35*0.75-0.75怎样简算?
1.27*0.75-35*0.75-0.75
=0.75*(1.27-35-1)
=-26.0475

(1.27-35-1)*0.75

原式=0.75*(1.27-35-1)
=0.75*(0.27-35)
=(0.5+0.25)*(0.27-35)
=0.5*0.27+0.25*0.27-0.5*35-0.25*35
=0.135+0.0675+17.5+8.75
=26.4525
不晓得算不算对额……自己写的、、、