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On line Solution of Monovariate Equation:
    Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
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    Current location:Equations > Monovariate Equation > The history of univariate equation calculation > Answer

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

[ 1/1 Equation]
    Work: Find the solution of equation 25950/(1+x/12*6)+25950/(1+x/12*7)+25950/(1+x/12*8)+25950/(1+x/12*9)+25950/(1+x/12*10)+25950/(1+x/12*11)+25950/(1+x/12*12) = 50000 .
    Question type: Equation
    Solution:Original question:
     25950 ÷ (1 + x ÷ 12 × 6) + 25950 ÷ (1 + x ÷ 12 × 7) + 25950 ÷ (1 + x ÷ 12 × 8) + 25950 ÷ (1 + x ÷ 12 × 9) + 25950 ÷ (1 + x ÷ 12 × 10) + 25950 ÷ (1 + x ÷ 12 × 11) = 50000
     Multiply both sides of the equation by:(1 + x ÷ 12 × 6)
     25950 + 25950 ÷ (1 + x ÷ 12 × 7) × (1 + x ÷ 12 × 6) + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6) + 25950 ÷ (1 + x ÷ 12 × 9) × (1 + x ÷ 12 × 6) + 25950 ÷ (1 + x ÷ 12 × 10) = 50000(1 + x ÷ 12 × 6)
    Remove a bracket on the left of the equation::
     25950 + 25950 ÷ (1 + x ÷ 12 × 7) × 1 + 25950 ÷ (1 + x ÷ 12 × 7) × x ÷ 12 × 6 + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6) = 50000(1 + x ÷ 12 × 6)
    Remove a bracket on the right of the equation::
     25950 + 25950 ÷ (1 + x ÷ 12 × 7) × 1 + 25950 ÷ (1 + x ÷ 12 × 7) × x ÷ 12 × 6 + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6) = 50000 × 1 + 50000 x ÷ 12 × 6
    The equation is reduced to :
     25950 + 25950 ÷ (1 + x ÷ 12 × 7) + 12975 ÷ (1 + x ÷ 12 × 7) × x + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6) + 25950 ÷ (1 + x ÷ 12 × 9) × (1 + x ÷ 12 × 6) = 50000 + 25000 x
     Multiply both sides of the equation by:(1 + x ÷ 12 × 7)
     25950(1 + x ÷ 12 × 7) + 25950 + 12975 x + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) + 25950 ÷ (1 + x ÷ 12 × 9) × (1 + x ÷ 12 × 6) = 50000(1 + x ÷ 12 × 7) + 25000 x (1 + x ÷ 12 × 7)
    Remove a bracket on the left of the equation:
     25950 × 1 + 25950 x ÷ 12 × 7 + 25950 + 12975 x + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6) = 50000(1 + x ÷ 12 × 7) + 25000 x (1 + x ÷ 12 × 7)
    Remove a bracket on the right of the equation::
     25950 × 1 + 25950 x ÷ 12 × 7 + 25950 + 12975 x + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6) = 50000 × 1 + 50000 x ÷ 12 × 7 + 25000 x (1 + x ÷ 12 × 7)
    The equation is reduced to :
     25950 +
30275
2
x + 25950 + 12975 x + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) + 25950 ÷ (1 + x ÷ 12 × 9) = 50000 +
87500
3
x + 25000 x (1 + x ÷ 12 × 7)
    The equation is reduced to :
     51900 +
56225
2
x + 25950 ÷ (1 + x ÷ 12 × 8) × (1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) + 25950 ÷ (1 + x ÷ 12 × 9) × (1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) + 25950 = 50000 +
87500
3
x + 25000 x (1 + x ÷ 12 × 7)
     Multiply both sides of the equation by:(1 + x ÷ 12 × 8)
     51900(1 + x ÷ 12 × 8) +
56225
2
x (1 + x ÷ 12 × 8) + 25950(1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) + 25950 ÷ (1 + x ÷ 12 × 9) × (1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) = 50000(1 + x ÷ 12 × 8) +
87500
3
x (1 + x ÷ 12 × 8) + 25000 x (1 + x ÷ 12 × 7)(1 + x ÷ 12 × 8)
    Remove a bracket on the left of the equation:
     51900 × 1 + 51900 x ÷ 12 × 8 +
56225
2
x (1 + x ÷ 12 × 8) + 25950(1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) = 50000(1 + x ÷ 12 × 8) +
87500
3
x (1 + x ÷ 12 × 8) + 25000 x (1 + x ÷ 12 × 7)(1 + x ÷ 12 × 8)
    Remove a bracket on the right of the equation::
     51900 × 1 + 51900 x ÷ 12 × 8 +
56225
2
x (1 + x ÷ 12 × 8) + 25950(1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) = 50000 × 1 + 50000 x ÷ 12 × 8 +
87500
3
x (1 + x ÷ 12 × 8) + 25000 x (1 + x ÷ 12 × 7)
    The equation is reduced to :
     51900 + 34600 x +
56225
2
x (1 + x ÷ 12 × 8) + 25950(1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) + 25950 ÷ (1 + x ÷ 12 × 9) × (1 + x ÷ 12 × 6) = 50000 +
100000
3
x +
87500
3
x (1 + x ÷ 12 × 8) + 25000 x (1 + x ÷ 12 × 7)(1 + x ÷ 12 × 8)
     Multiply both sides of the equation by:(1 + x ÷ 12 × 9)
     51900(1 + x ÷ 12 × 9) + 34600 x (1 + x ÷ 12 × 9) +
56225
2
x (1 + x ÷ 12 × 8)(1 + x ÷ 12 × 9) + 25950(1 + x ÷ 12 × 6)(1 + x ÷ 12 × 7) = 50000(1 + x ÷ 12 × 9) +
100000
3
x (1 + x ÷ 12 × 9) +
87500
3
x (1 + x ÷ 12 × 8)(1 + x ÷ 12 × 9) + 25000 x (1 + x ÷ 12 × 7)
    Remove a bracket on the left of the equation:
     51900 × 1 + 51900 x ÷ 12 × 9 + 34600 x (1 + x ÷ 12 × 9) +
56225
2
x (1 + x ÷ 12 × 8) = 50000(1 + x ÷ 12 × 9) +
100000
3
x (1 + x ÷ 12 × 9) +
87500
3
x (1 + x ÷ 12 × 8)(1 + x ÷ 12 × 9) + 25000 x (1 + x ÷ 12 × 7)
    Remove a bracket on the right of the equation::
     51900 × 1 + 51900 x ÷ 12 × 9 + 34600 x (1 + x ÷ 12 × 9) +
56225
2
x (1 + x ÷ 12 × 8) = 50000 × 1 + 50000 x ÷ 12 × 9 +
100000
3
x (1 + x ÷ 12 × 9) +
87500
3
x (1 + x ÷ 12 × 8)
    The equation is reduced to :
     51900 + 38925 x + 34600 x (1 + x ÷ 12 × 9) +
56225
2
x (1 + x ÷ 12 × 8)(1 + x ÷ 12 × 9) + 25950(1 + x ÷ 12 × 6) = 50000 + 37500 x +
100000
3
x (1 + x ÷ 12 × 9) +
87500
3
x (1 + x ÷ 12 × 8)(1 + x ÷ 12 × 9) + 25000 x
     Multiply both sides of the equation by:(1 + x ÷ 12 × 10)
     51900(1 + x ÷ 12 × 10) + 38925 x (1 + x ÷ 12 × 10) + 34600 x (1 + x ÷ 12 × 9)(1 + x ÷ 12 × 10) +
56225
2
x (1 + x ÷ 12 × 8) = 50000(1 + x ÷ 12 × 10) + 37500 x (1 + x ÷ 12 × 10) +
100000
3
x (1 + x ÷ 12 × 9)(1 + x ÷ 12 × 10) +
87500
3
x (1 + x ÷ 12 × 8)
    Remove a bracket on the left of the equation:
     51900 × 1 + 51900 x ÷ 12 × 10 + 38925 x (1 + x ÷ 12 × 10) + 34600 x (1 + x ÷ 12 × 9) = 50000(1 + x ÷ 12 × 10) + 37500 x (1 + x ÷ 12 × 10) +
100000
3
x (1 + x ÷ 12 × 9)(1 + x ÷ 12 × 10) +
87500
3
x (1 + x ÷ 12 × 8)
    Remove a bracket on the right of the equation::
     51900 × 1 + 51900 x ÷ 12 × 10 + 38925 x (1 + x ÷ 12 × 10) + 34600 x (1 + x ÷ 12 × 9) = 50000 × 1 + 50000 x ÷ 12 × 10 + 37500 x (1 + x ÷ 12 × 10) +
100000
3
x (1 + x ÷ 12 × 9)

    The solution of the equation:
        x1≈-1.905160 , keep 6 decimal places
        x2≈-1.626211 , keep 6 decimal places
        x3≈-1.420915 , keep 6 decimal places
        x4≈-1.134489 , keep 6 decimal places
        x5≈3.645184 , keep 6 decimal places
    
    There are 5 solution(s).


解程的详细方法请参阅:《方程的解法》



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