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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 (3/31)*2%+(28/31)*(1.5%P+(1-P)2% ) = 1.89% .
    Question type: Equation
    Solution:Original question:
     (3 ÷ 31) ×
2
100
 + (28 ÷ 31)(
3
200
 P + (1 − P ) ×
2
100
) =
189
10000
    Remove the bracket on the left of the equation:
     Left side of the equation = 3 ÷ 31 ×
2
100
 + (28 ÷ 31)(
3
200
 P + (1 − P ) ×
2
100
)
                                             =
3
1550
 + (28 ÷ 31)(
3
200
 P + (1 − P ) ×
2
100
)
                                             =
3
1550
 + 28 ÷ 31 × (
3
200
 P + (1 − P ) ×
2
100
)
                                             =
3
1550
 +
28
31
(
3
200
 P + (1 − P ) ×
2
100
)
                                             =
3
1550
 +
28
31
 ×
3
200
 P +
28
31
(1 − P ) ×
2
100
                                             =
3
1550
 +
21
1550
 P +
14
775
(1 − P )
                                             =
3
1550
 +
21
1550
 P +
14
775
 × 1 −
14
775
 P
                                             =
3
1550
 +
21
1550
 P +
14
775
 −
14
775
 P
                                             =
1
50
 −
7
1550
 P
    The equation is transformed into :
     
1
50
 −
7
1550
 P =
189
10000

    Transposition :
      -
7
1550
 P =
189
10000
 −
1
50

    Combine the items on the right of the equation:
      -
7
1550
 P = -
11
10000

    By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
     
11
10000
 =
7
1550
 P

    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 :
     
7
1550
 P =
11
10000

    The coefficient of the unknown number is reduced to 1 :
      P =
11
10000
 ÷
7
1550
        =
11
10000
 ×
1550
7
        =
11
200
 ×
31
7

    We obtained :
      P =
341
1400
    This is the solution of the equation.

    Convert the result to decimal form :
      P = 0.243571



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