0.6-0.9×1.2*2.16怎么简便计算
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0.6-0.9×1.2*2.16
=0.6-0.9*(1+0.2)*2.16
=0.6-(0.9*1+0.9*0.2)*2.16
=0.6-(0.9+0.18)*2.16
=0.6-0.98*2.16
=0.6-(1-0.02)*2.16
=0.6-(1*2.16-0.02*2.16)
=0.6-(2.16-0.0432)
=0.6-2.16+0.0432
=0.6432-2.16
=-1.5168
=0.6-0.9*(1+0.2)*2.16
=0.6-(0.9*1+0.9*0.2)*2.16
=0.6-(0.9+0.18)*2.16
=0.6-0.98*2.16
=0.6-(1-0.02)*2.16
=0.6-(1*2.16-0.02*2.16)
=0.6-(2.16-0.0432)
=0.6-2.16+0.0432
=0.6432-2.16
=-1.5168
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