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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+(X-7.81%)*1.025 = 21% .
    Question type: Equation
    Solution:Original question:
      X + ( X −
781
10000
) ×
41
40
 =
21
100
    Remove the bracket on the left of the equation:
     Left side of the equation = X + X ×
41
40
 −
781
10000
 ×
41
40
                                             = X + X ×
41
40
 −
32021
400000
                                             =
81
40
 X −
32021
400000
    The equation is transformed into :
     
81
40
 X −
32021
400000
 =
21
100

    Transposition :
     
81
40
 X =
21
100
 +
32021
400000

    Combine the items on the right of the equation:
     
81
40
 X =
116021
400000

    The coefficient of the unknown number is reduced to 1 :
      X =
116021
400000
 ÷
81
40
        =
116021
400000
 ×
40
81
        =
116021
10000
 ×
1
81

    We obtained :
      X =
116021
810000
    This is the solution of the equation.

    Convert the result to decimal form :
      X = 0.143236



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