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〖1/1算式〗
    作业：求算式 0.7811*1.12184/(1.12184-0.7)+0.2105/(1-0.7)+0.0084*0.54176/(0.54176-0.7) 的值.
    题型：数学计算
    解:
          0.7811*1.12184/(1.12184-0.7)+0.2105/(1-0.7)+0.0084*0.54176/(0.54176-0.7)
        =0.7811*1.12184/0.42184+0.2105/(1-0.7)+0.0084*0.54176/(0.54176-0.7)
        =0.7811*1.12184/0.42184+0.2105/0.3+0.0084*0.54176/(0.54176-0.7)
        =0.7811*1.12184/0.42184+0.2105/0.3+0.0084*0.54176/(-0.15824)
        =0.876269/0.42184+0.2105/0.3+0.0084*0.54176/(-0.15824)
        =2.077254+0.2105/0.3+0.0084*0.54176/(-0.15824)
        =2.077254+0.701667+0.0084*0.54176/(-0.15824)
        =2.077254+0.701667+0.004551/(-0.15824)
        =2.077254+0.701667+(-0.02876)
        =2.778921+(-0.02876)
        =2.750161
    答案:0.7811*1.12184/(1.12184-0.7)+0.2105/(1-0.7)+0.0084*0.54176/(0.54176-0.7)=2.750161

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