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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 （100-X÷0.1）（1.21+X）-0.1（100-X÷0.1）-X÷0.1×0.05 = 103.8 .
    Question type: Equation
    Solution:Original question:
     (100 − X ÷
1
10
)(
121
100
 + X ) −
1
10
(100 − X ÷
1
10
) − X ÷
1
10
 ×
1
20
 =
519
5
     Left side of the equation = (100 − X ÷
1
10
)(
121
100
 + X ) −
1
10
(100 − X ÷
1
10
) − X ×
1
2
    The equation is transformed into :
     (100 − X ÷
1
10
)(
121
100
 + X ) −
1
10
(100 − X ÷
1
10
) −
1
2
 X =
519
5
    Remove the bracket on the left of the equation:
     Left side of the equation = 100(
121
100
 + X ) − X ÷
1
10
 × (
121
100
 + X ) −
1
10
(100 − X ÷
1
10
) −
1
2
 X
                                             = 100 ×
121
100
 + 100 X − X × 10(
121
100
 + X ) −
1
10
(100 − X ÷
1
10
) −
1
2
 X
                                             = 121 + 100 X − X × 10(
121
100
 + X ) −
1
10
(100 − X ÷
1
10
) −
1
2
 X
                                             = 121 +
199
2
 X − X × 10(
121
100
 + X ) −
1
10
(100 − X ÷
1
10
)
                                             = 121 +
199
2
 X − X × 10 ×
121
100
 − X × 10 X −
1
10
(100 − X ÷
1
10
)
                                             = 121 +
199
2
 X − X ×
121
10
 − X × 10 X −
1
10
(100 − X ÷
1
10
)
                                             = 121 +
437
5
 X − X × 10 X −
1
10
(100 − X ÷
1
10
)
                                             = 121 +
437
5
 X − X × 10 X −
1
10
 × 100 +
1
10
 X ÷
1
10
                                             = 121 +
437
5
 X − X × 10 X − 10 + 1 X
                                             = 111 +
442
5
 X − X × 10 X
    The equation is transformed into :
     111 +
442
5
 X − X × 10 X =
519
5

    The solution of the equation:
        X1≈-0.080711 , keep 6 decimal places
        X2≈8.920711 , keep 6 decimal places    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》


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