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 ((5.6+9.9)×(5.6×21.7+33.1×9.9)/(5.6+9.9))/((6.3-0.5+15.5)×10) 的值.
    题型：数学计算
    解:
          ((5.6+9.9)×(5.6×21.7+33.1×9.9)/(5.6+9.9))/((6.3-0.5+15.5)×10)
        =(15.5×(5.6×21.7+33.1×9.9)/(5.6+9.9))/((6.3-0.5+15.5)×10)
        =(15.5×449.21/(5.6+9.9))/((6.3-0.5+15.5)×10)
        =(15.5×449.21/15.5)/((6.3-0.5+15.5)×10)
        =449.21/((6.3-0.5+15.5)×10)
        =449.21/(21.3×10)
        =449.21/213
        =2.108967
    答案:((5.6+9.9)×(5.6×21.7+33.1×9.9)/(5.6+9.9))/((6.3-0.5+15.5)×10)=2.108967

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