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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 4.7%*(1/(1+1.25))*(1-21%)+R*(1.25/(1+1.25)) = 7.8% .
    Question type: Equation
    Solution:Original question:
     
47
1000
(1 ÷ (1 +
5
4
))(1 −
21
100
) + R (
5
4
 ÷ (1 +
5
4
)) =
39
500
    Remove a bracket on the left of the equation:：
     
47
1000
 × 1 ÷ (1 +
5
4
) × (1 −
21
100
) + R (
5
4
 ÷ (1 +
5
4
)) =
39
500
    The equation is reduced to :
     
47
1000
 ÷ (1 +
5
4
) × (1 −
21
100
) + R (
5
4
 ÷ (1 +
5
4
)) =
39
500
     Multiply both sides of the equation by:(1 +
5
4
)
     
47
1000
(1 −
21
100
) + R (
5
4
 ÷ (1 +
5
4
))(1 +
5
4
) =
39
500
(1 +
5
4
)
    Remove a bracket on the left of the equation:
     
47
1000
 × 1 −
47
1000
 ×
21
100
 + R (
5
4
 ÷ (1 +
5
4
))(1 +
5
4
) =
39
500
(1 +
5
4
)
    Remove a bracket on the right of the equation:：
     
47
1000
 × 1 −
47
1000
 ×
21
100
 + R (
5
4
 ÷ (1 +
5
4
))(1 +
5
4
) =
39
500
 × 1 +
39
500
 ×
5
4
    The equation is reduced to :
     
47
1000
 −
987
100000
 + R (
5
4
 ÷ (1 +
5
4
))(1 +
5
4
) =
39
500
 +
39
400
    The equation is reduced to :
     
3713
100000
 + R (
5
4
 ÷ (1 +
5
4
))(1 +
5
4
) =
351
2000
    Remove a bracket on the left of the equation:
     
3713
100000
 + R ×
5
4
 ÷ (1 +
5
4
) × (1 +
5
4
) =
351
2000
     Multiply both sides of the equation by:(1 +
5
4
)
     
3713
100000
(1 +
5
4
) + R ×
5
4
(1 +
5
4
) =
351
2000
(1 +
5
4
)
    Remove a bracket on the left of the equation:
     
3713
100000
 × 1 +
3713
100000
 ×
5
4
 + R ×
5
4
(1 +
5
4
) =
351
2000
(1 +
5
4
)
    Remove a bracket on the right of the equation:：
     
3713
100000
 × 1 +
3713
100000
 ×
5
4
 + R ×
5
4
(1 +
5
4
) =
351
2000
 × 1 +
351
2000
 ×
5
4
    The equation is reduced to :
     
3713
100000
 +
3713
80000
 + R ×
5
4
(1 +
5
4
) =
351
2000
 +
351
1600
    The equation is reduced to :
     
33417
400000
 + R ×
5
4
(1 +
5
4
) =
3159
8000
    Remove a bracket on the left of the equation:
     
33417
400000
 + R ×
5
4
 × 1 + R ×
5
4
 ×
5
4
 =
3159
8000
    The equation is reduced to :
     
33417
400000
 + R ×
5
4
 + R ×
25
16
 =
3159
8000
    The equation is reduced to :
     
33417
400000
 +
45
16
 R =
3159
8000

    Transposition :
     
45
16
 R =
3159
8000
 −
33417
400000

    Combine the items on the right of the equation:
     
45
16
 R =
124533
400000

    The coefficient of the unknown number is reduced to 1 :
      R =
124533
400000
 ÷
45
16
        =
124533
400000
 ×
16
45
        =
13837
25000
 ×
1
5

    We obtained :
      R =
13837
125000
    This is the solution of the equation.

    Convert the result to decimal form :
      R = 0.110696



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