Mathematics
         
语言：中文    Language:English
                                Equations   
Fold
                                Unary equation
                                Multivariate equation
                                Math OP  
Unfold
                                Linear algebra      
Unfold
                                Derivative function
                                Function image
                                Hot issues
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 (7.8(25-x)+81.2)*(36.1+3.9x)/10000+1 = 0 .
    Question type: Equation
    Solution:Original question:
     (
39
5
(25 − x ) +
406
5
)(
361
10
 +
39
10
 x ) ÷ 10000 + 1 = 0
    Remove the bracket on the left of the equation:
     Left side of the equation =
39
5
(25 − x )(
361
10
 +
39
10
 x ) ×
1
10000
 +
406
5
(
361
10
 +
39
10
 x ) ×
1
10000
 + 1
                                             =
39
50000
(25 − x )(
361
10
 +
39
10
 x ) +
203
25000
(
361
10
 +
39
10
 x ) + 1
                                             =
39
50000
 × 25(
361
10
 +
39
10
 x ) −
39
50000
 x (
361
10
 +
39
10
 x ) +
203
25000
(
361
10
 +
39
10
 x ) + 1
                                             =
39
2000
(
361
10
 +
39
10
 x ) −
39
50000
 x (
361
10
 +
39
10
 x ) +
203
25000
(
361
10
 +
39
10
 x ) + 1
                                             =
39
2000
 ×
361
10
 +
39
2000
 ×
39
10
 x −
39
50000
 x (
361
10
 +
39
10
 x ) +
203
25000
(
361
10
 +
39
10
 x ) + 1
                                             =
14079
20000
 +
1521
20000
 x −
39
50000
 x (
361
10
 +
39
10
 x ) +
203
25000
(
361
10
 +
39
10
 x ) + 1
                                             =
34079
20000
 +
1521
20000
 x −
39
50000
 x (
361
10
 +
39
10
 x ) +
203
25000
(
361
10
 +
39
10
 x )
                                             =
34079
20000
 +
1521
20000
 x −
39
50000
 x ×
361
10
 −
39
50000
 x ×
39
10
 x +
203
25000
(
361
10
 +
39
10
 x )
                                             =
34079
20000
 +
1521
20000
 x −
14079
500000
 x −
1521
500000
 x x +
203
25000
(
361
10
 +
39
10
 x )
                                             =
34079
20000
 +
11973
250000
 x −
1521
500000
 x x +
203
25000
(
361
10
 +
39
10
 x )
                                             =
34079
20000
 +
11973
250000
 x −
1521
500000
 x x +
203
25000
 ×
361
10
 +
203
25000
 ×
39
10
 x
                                             =
34079
20000
 +
11973
250000
 x −
1521
500000
 x x +
73283
250000
 +
7917
250000
 x
                                             =
998541
500000
 +
1989
25000
 x −
1521
500000
 x x
    The equation is transformed into :
     
998541
500000
 +
1989
25000
 x −
1521
500000
 x x = 0

    The solution of the equation:
        x1≈-15.689531 , keep 6 decimal places
        x2≈41.843377 , keep 6 decimal places    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》


Your problem has not been solved here? Please go to the Hot Problems section！


Return



  New addition:Lenders ToolBox module（Specific location：Math OP > Lenders ToolBox ），welcome。