总述：本次共解2题。其中
           ☆方程1题
           ☆算术计算1题

〖1/2算式〗
    作业：求算式 (8.41×0.7)/2×(2/3×0.7)+((-36.9-20.56)×1.9)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7) 的值.
    题型：数学计算
    解:
          (8.41×0.7)/2×(2/3×0.7)+((-36.9-20.56)×1.9)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7)
        =5.887/2×(2/3×0.7)+((-36.9-20.56)×1.9)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7)
        =5.887/2×0.466667+((-36.9-20.56)×1.9)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7)
        =5.887/2×0.466667+((-57.46)×1.9)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7)
        =5.887/2×0.466667+(-109.174)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7)
        =5.887/2×0.466667+(-109.174)/2×(2/3×1.9×(-94.36)/(-36.9-20.56)+0.7)
        =5.887/2×0.466667+(-109.174)/2×(2/3×1.9×(-94.36)/(-57.46)+0.7)
        =5.887/2×0.466667+(-109.174)/2×2.780103
        =2.9435×0.466667+(-109.174)/2×2.780103
        =1.373634+(-109.174)/2×2.780103
        =1.373634+(-54.587)×2.780103
        =1.373634+(-151.757482)
        =-150.383848
    答案:(8.41×0.7)/2×(2/3×0.7)+((-36.9-20.56)×1.9)/2×(2/3×1.9×(-2×36.9-20.56)/(-36.9-20.56)+0.7)=-150.383848
〖 2/2方程〗
    作业：求方程 -20.56x（x/2+2.6）+(8.6x^2)/2（2/3x+2.6） = 126.77x(x/2+2.6)+(46x^2)/2(2/3x+2.6) 的解.
    题型：方程
    解:
    方程的解为：
        x=0    
    有 1个解。

解方程的详细方法请参阅：《方程的解法》

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