73×54-34×73-10×73用简便方法.应该是73
=73x(54-34-10)
=73x10
=730
75×54-34×73-10×73
＝73×54+2×54-73×34-73×10
＝(54-34-10)×73+2×54
＝10×73+2×54
＝730+108
＝838
=75×54-73×(34-10)
=75×54-73×24
=(73+2)×54-73×24
=73×(54-24)+2×54
=2190+108
=2298
75x54－34x73－10x73
=75x54－【（34+10）X73】
=4050－3212
=838
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