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〖1/1算式〗
    作业：求算式 (-15000+14000)*0.6*(1/0.09)*(1-1.09^-10)+250000/7*0.4*(1/0.09)*(1-1.09^-7)-250000-37000*0.6 的值.
    题型：数学计算
    解:
          (-15000+14000)*0.6*(1/0.09)*(1-1.09^-10)+250000/7*0.4*(1/0.09)*(1-1.09^-7)-250000-37000*0.6
        =-1000*0.6*(1/0.09)*(1-1.09^-10)+250000/7*0.4*(1/0.09)*(1-1.09^-7)-250000-37000*0.6
        =-1000*0.6*11.111111*(1-1.09^-10)+250000/7*0.4*(1/0.09)*(1-1.09^-7)-250000-37000*0.6
        =-1000*0.6*11.111111*0.577589+250000/7*0.4*(1/0.09)*(1-1.09^-7)-250000-37000*0.6
        =-1000*0.6*11.111111*0.577589+250000/7*0.4*11.111111*(1-1.09^-7)-250000-37000*0.6
        =-1000*0.6*11.111111*0.577589+250000/7*0.4*11.111111*0.452966-250000-37000*0.6
        =-600*11.111111*0.577589+250000/7*0.4*11.111111*0.452966-250000-37000*0.6
        =(-6666.6666)*0.577589+250000/7*0.4*11.111111*0.452966-250000-37000*0.6
        =(-3850.593295)+250000/7*0.4*11.111111*0.452966-250000-37000*0.6
        =-3850.593295+35714.285714*0.4*11.111111*0.452966-250000-37000*0.6
        =-3850.593295+14285.714286*11.111111*0.452966-250000-37000*0.6
        =-3850.593295+158730.157146*0.452966-250000-37000*0.6
        =-3850.593295+71899.364362-250000-37000*0.6
        =-3850.593295+71899.364362-250000-22200
        =68048.771067-250000-22200
        =-181951.228933-22200
        =-204151.228933
    答案:(-15000+14000)*0.6*(1/0.09)*(1-1.09^-10)+250000/7*0.4*(1/0.09)*(1-1.09^-7)-250000-37000*0.6=-204151.228933

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