计算题:3-7.14/3.5*1.05和【20-(90.75/6.6+2.25)】*11.6用脱式

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计算题:3-7.14/3.5*1.05和【20-(90.75/6.6+2.25)】*11.6用脱式

计算题:3-7.14/3.5*1.05和【20-(90.75/6.6+2.25)】*11.6用脱式
计算题:3-7.14/3.5*1.05和【20-(90.75/6.6+2.25)】*11.6
用脱式

计算题:3-7.14/3.5*1.05和【20-(90.75/6.6+2.25)】*11.6用脱式
3-7.14/3.5*1.05
=3-1.02/0.5*1.05(约分)
=3-1.02*2*1.05
=3-1.02*2.1
=3-1.02*(2+0.1)
=3-2.04-0.102
=0.858
【20-(90.75/6.6+2.25)】*11.6
=【20-363/4*(5/33)+9/4】*11.6
=【20-(55/4+9/4)】*11.6
=【20-16】*11.6
=4*11.6
=46.4

3-7.14/3.5*1.05=3-2.04*1.05=3-2.142=0.858
【20-(90.75/6.6+2.25)】*11.6=【20-(13.75+2.25)】*11.6=16*11.6=185.8