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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.
    It supports equations that contain mathematical functions.
    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 X*(1-2.5%)*(1-5.2%)*(1-1.5%)*(1-6.47%)*(1-72%)*(1-0.3%)*(1-0.3%)*(1-2.13%) = 20.7 .
    Question type: Equation
    Solution:Original question:
      X (1 −
5
200
)(1 −
26
500
)(1 −
3
200
)(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) =
207
10
    Remove the bracket on the left of the equation:
     Left side of the equation = X × 1(1 −
26
500
)(1 −
3
200
)(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X ×
5
200
(1 −
26
500
)
                                             = X × 1 × 1(1 −
3
200
)(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X × 1 ×
26
500
                                             = X × 1(1 −
3
200
)(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X ×
13
250
(1 −
3
200
)(1 −
647
10000
)
                                             = X × 1 × 1(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X × 1 ×
3
200
(1 −
647
10000
)
                                             = X × 1(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X ×
3
200
(1 −
647
10000
)(1 −
72
100
)(1 −
3
1000
)
                                             = X × 1 × 1(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X × 1 ×
647
10000
(1 −
72
100
)(1 −
3
1000
)
                                             = X × 1(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X ×
647
10000
(1 −
72
100
)(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
)
                                             = X × 1 × 1(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X × 1 ×
72
100
(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
)
                                             = X × 1(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X ×
18
25
(1 −
3
1000
)(1 −
3
1000
)(1 −
213
10000
) − X ×
647
10000
                                             = X × 1 × 1(1 −
3
1000
)(1 −
213
10000
) − X × 1 ×
3
1000
(1 −
3
1000
)(1 −
213
10000
) − X ×
18
25
                                             = X × 1(1 −
3
1000
)(1 −
213
10000
) − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
) − X ×
18
25
(1 −
3
1000
)(1 −
3
1000
)
                                             = X × 1 × 1(1 −
213
10000
) − X × 1 ×
3
1000
(1 −
213
10000
) − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
)
                                             = X × 1(1 −
213
10000
) − X ×
3
1000
(1 −
213
10000
) − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
) − X ×
18
25
                                             = X × 1 × 1 − X × 1 ×
213
10000
 − X ×
3
1000
(1 −
213
10000
) − X ×
3
1000
(1 −
3
1000
)
                                             = X × 1 − X ×
213
10000
 − X ×
3
1000
(1 −
213
10000
) − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
) − X
                                             =
9787
10000
 X − X ×
3
1000
(1 −
213
10000
) − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
) − X ×
18
25
(1 −
3
1000
)
                                             =
9787
10000
 X − X ×
3
1000
 × 1 + X ×
3
1000
 ×
213
10000
 − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
)
                                             =
9787
10000
 X − X ×
3
1000
 + X ×
639
10000000
 − X ×
3
1000
(1 −
3
1000
)(1 −
213
10000
) − X ×
18
25

    
        X≈89.242616 , keep 6 decimal places    
    There are 1 solution(s).

解一元一次方程的详细方法请参阅：《一元一次方程的解法》


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