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

[ 1/2 Equation]
    Work: Find the solution of equation 0.3X+4(400-X) = 860 .
    Question type: Equation
    Solution:Original question:
     
3
10
 X + 4(400 − X ) = 860
    Remove the bracket on the left of the equation:
     Left side of the equation =
3
10
 X + 4 × 400 − 4 X
                                             =
3
10
 X + 1600 − 4 X
                                             = -
37
10
 X + 1600
    The equation is transformed into :
      -
37
10
 X + 1600 = 860

    Transposition :
      -
37
10
 X = 860 − 1600

    Combine the items on the right of the equation:
      -
37
10
 X = - 740

    By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
     740 =
37
10
 X

    If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :
     
37
10
 X = 740

    The coefficient of the unknown number is reduced to 1 :
      X = 740 ÷
37
10
        = 740 ×
10
37
        = 20 × 10

    We obtained :
      X = 200
    This is the solution of the equation.

[ 2/2 Equation]
    Work: Find the solution of equation (1+6%)X+(1-5%)X(2200-X) = 2200+110 .
    Question type: Equation
    Solution:Original question:
     (1 +
6
100
) X + (1 −
5
100
) X (2200 − X ) = 2200 + 110
    Remove the bracket on the left of the equation:
     Left side of the equation = 1 X +
6
100
 X + (1 −
5
100
) X (2200 − X )
                                             =
53
50
 X + (1 −
5
100
) X (2200 − X )
                                             =
53
50
 X + 1 X (2200 − X ) −
5
100
 X (2200 − X )
                                             =
53
50
 X + 1 X × 2200 − 1 X X −
5
100
 X (2200 − X )
                                             =
53
50
 X + 2200 X − 1 X X −
5
100
 X (2200 − X )
                                             =
110053
50
 X − 1 X X −
5
100
 X (2200 − X )
                                             =
110053
50
 X − 1 X X −
5
100
 X × 2200 +
5
100
 X X
                                             =
110053
50
 X − 1 X X − 110 X +
5
100
 X X
                                             =
104553
50
 X − 1 X X +
5
100
 X X
    The equation is transformed into :
     
104553
50
 X − 1 X X +
5
100
 X X = 2200 + 110
     Right side of the equation = 2310
    The equation is transformed into :
     
104553
50
 X − 1 X X +
5
100
 X X = 2310

    
        X≈1.105258 , 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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