Overview: 2 questions will be solved this time.Among them
           ☆1 equations
           ☆1 arithmetic calculations

[1/2 Formula]
    Work: Calculate the value of equation (8.41×0.7)/2×(2/3×0.7)+((-36.9-1.64)×4.1)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7) .
    Question type: Mathematical calculation
    Solution:
          (8.41×0.7)/2×(2/3×0.7)+((-36.9-1.64)×4.1)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7)
        =5.887/2×(2/3×0.7)+((-36.9-1.64)×4.1)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7)
        =5.887/2×0.466667+((-36.9-1.64)×4.1)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7)
        =5.887/2×0.466667+((-38.54)×4.1)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7)
        =5.887/2×0.466667+(-158.014)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7)
        =5.887/2×0.466667+(-158.014)/2×(2/3×4.1×(-75.44)/(-36.9-1.64)+0.7)
        =5.887/2×0.466667+(-158.014)/2×(2/3×4.1×(-75.44)/(-38.54)+0.7)
        =5.887/2×0.466667+(-158.014)/2×6.050358
        =2.9435×0.466667+(-158.014)/2×6.050358
        =1.373634+(-158.014)/2×6.050358
        =1.373634+(-79.007)×6.050358
        =1.373634+(-478.020635)
        =-476.647001
    Answer:(8.41×0.7)/2×(2/3×0.7)+((-36.9-1.64)×4.1)/2×(2/3×4.1×(-2×36.9-1.64)/(-36.9-1.64)+0.7)=-476.647001
[ 2/2 Equation]
    Work: Find the solution of equation -1.64x（x/2+4.8）+(2.04x^2)/2（2/3x+4.8） = 126.77x(x/2+4.8)+(10.93x^2)/2(2/3x+4.8) .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, there is a common factor:
    ( x - 0 )
    From
        x - 0 = 0
    it is concluded that:：
        x₁=0
    Solutions that cannot be obtained by factorization:
        x₂≈-14.999106 , keep 6 decimal places
        x₃≈-13.867373 , keep 6 decimal places    
    There are 3 solution(s).

解程的详细方法请参阅：《方程的解法》

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