总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 10/(1+20%)+12/(1+20%)^2+17.28/(1+20%)^3+19.01/(1+20%)^4+21.08/(1+20%)^5+52.45/(1+15%) 的值.
    题型：数学计算
    解:
          10/(1+20%)+12/(1+20%)^2+17.28/(1+20%)^3+19.01/(1+20%)^4+21.08/(1+20%)^5+52.45/(1+15%)
        =10/1.2+12/(1+20%)^2+17.28/(1+20%)^3+19.01/(1+20%)^4+21.08/(1+20%)^5+52.45/(1+15%)
        =10/1.2+12/1.2^2+17.28/(1+20%)^3+19.01/(1+20%)^4+21.08/(1+20%)^5+52.45/(1+15%)
        =10/1.2+12/1.2^2+17.28/1.2^3+19.01/(1+20%)^4+21.08/(1+20%)^5+52.45/(1+15%)
        =10/1.2+12/1.2^2+17.28/1.2^3+19.01/1.2^4+21.08/(1+20%)^5+52.45/(1+15%)
        =10/1.2+12/1.2^2+17.28/1.2^3+19.01/1.2^4+21.08/1.2^5+52.45/(1+15%)
        =10/1.2+12/1.2^2+17.28/1.2^3+19.01/1.2^4+21.08/1.2^5+52.45/1.15
        =10/1.2+12/1.44+17.28/1.2^3+19.01/1.2^4+21.08/1.2^5+52.45/1.15
        =10/1.2+12/1.44+17.28/1.728+19.01/1.2^4+21.08/1.2^5+52.45/1.15
        =10/1.2+12/1.44+17.28/1.728+19.01/2.0736+21.08/1.2^5+52.45/1.15
        =10/1.2+12/1.44+17.28/1.728+19.01/2.0736+21.08/2.488319999999999+52.45/1.15
        =8.333333+12/1.44+17.28/1.728+19.01/2.0736+21.08/2.488319999999999+52.45/1.15
        =8.333333+8.333333+17.28/1.728+19.01/2.0736+21.08/2.488319999999999+52.45/1.15
        =8.333333+8.333333+10+19.01/2.0736+21.08/2.488319999999999+52.45/1.15
        =8.333333+8.333333+10+9.167631+21.08/2.488319999999999+52.45/1.15
        =8.333333+8.333333+10+9.167631+8.471579+52.45/1.15
        =8.333333+8.333333+10+9.167631+8.471579+45.608696
        =16.666666+10+9.167631+8.471579+45.608696
        =26.666666+9.167631+8.471579+45.608696
        =35.834297+8.471579+45.608696
        =44.305876+45.608696
        =89.914572
    答案:10/(1+20%)+12/(1+20%)^2+17.28/(1+20%)^3+19.01/(1+20%)^4+21.08/(1+20%)^5+52.45/(1+15%)=89.914572

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