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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-20）×3.45+20×2.07-1.9×x = 20.45 .
    Question type: Equation
    Solution:Original question:
     ( x − 20) ×
69
20
 + 20 ×
207
100
 −
19
10
 x =
409
20
     Left side of the equation = ( x − 20) ×
69
20
 +
207
5
 −
19
10
 x
    The equation is transformed into :
     ( x − 20) ×
69
20
 +
207
5
 −
19
10
 x =
409
20
    Remove the bracket on the left of the equation:
     Left side of the equation = x ×
69
20
 − 20 ×
69
20
 +
207
5
 −
19
10
 x
                                             = x ×
69
20
 − 69 +
207
5
 −
19
10
 x
                                             =
31
20
 x −
138
5
    The equation is transformed into :
     
31
20
 x −
138
5
 =
409
20

    Transposition :
     
31
20
 x =
409
20
 +
138
5

    Combine the items on the right of the equation:
     
31
20
 x =
961
20

    The coefficient of the unknown number is reduced to 1 :
      x =
961
20
 ÷
31
20
        =
961
20
 ×
20
31
        = 31 × 1

    We obtained :
      x = 31
    This is the solution of the equation.



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