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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 (31.17-30)/(40-31.17) = (a-0.8007)/(0.656-a) .
    Question type: Equation
    Solution:Original question:
     (
3117
100
− 30) ÷ (40 −
3117
100
) = ( a −
8007
10000
) ÷ (
82
125
− a )
     Multiply both sides of the equation by:(40 −
3117
100
) ,  (
82
125
− a )
     (
3117
100
− 30)(
82
125
− a ) = ( a −
8007
10000
)(40 −
3117
100
)
    Remove a bracket on the left of the equation::
     
3117
100
(
82
125
− a ) − 30(
82
125
− a ) = ( a −
8007
10000
)(40 −
3117
100
)
    Remove a bracket on the right of the equation::
     
3117
100
(
82
125
− a ) − 30(
82
125
− a ) = a (40 −
3117
100
) −
8007
10000
(40 −
3117
100
)
    Remove a bracket on the left of the equation:
     
3117
100
×
82
125
−
3117
100
a − 30(
82
125
− a ) = a (40 −
3117
100
) −
8007
10000
(40 −
3117
100
)
    Remove a bracket on the right of the equation::
     
3117
100
×
82
125
−
3117
100
a − 30(
82
125
− a ) = a × 40 − a ×
3117
100
−
8007
10000
(40 −
3117
100
)
    The equation is reduced to :
     
127797
6250
−
3117
100
a − 30(
82
125
− a ) = a × 40 − a ×
3117
100
−
8007
10000
(40 −
3117
100
)
    The equation is reduced to :
     
127797
6250
−
3117
100
a − 30(
82
125
− a ) =
883
100
a −
8007
10000
(40 −
3117
100
)
    Remove a bracket on the left of the equation:
     
127797
6250
−
3117
100
a − 30 ×
82
125
+ 30 a =
883
100
a −
8007
10000
(40 −
3117
100
)
    Remove a bracket on the right of the equation::
     
127797
6250
−
3117
100
a − 30 ×
82
125
+ 30 a =
883
100
a −
8007
10000
× 40 +
8007
10000
×
3117
100
    The equation is reduced to :
     
127797
6250
−
3117
100
a −
492
25
+ 30 a =
883
100
a −
8007
250
+
24957819
1000000
    The equation is reduced to :
     
4797
6250
−
117
100
a =
883
100
a −
7070181
1000000

    Transposition :
      -
117
100
a −
883
100
a = -
7070181
1000000
−
4797
6250

    Combine the items on the left of the equation:
      - 10 a = -
7070181
1000000
−
4797
6250

    
        a≈0.783770 , 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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