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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 1/x+1/(1+x) = 1/(3+x)+1/(6+x) .
    Question type: Equation
    Solution:Original question:
     1 ÷ x + 1 ÷ (1 + x ) = 1 ÷ (3 + x ) + 1 ÷ (6 + x )
     Multiply both sides of the equation by: x  ,  (3 + x )
     1(3 + x ) + 1 ÷ (1 + x ) × x (3 + x ) = 1 x + 1 ÷ (6 + x ) × x (3 + x )
    Remove a bracket on the left of the equation::
     1 × 3 + 1 x + 1 ÷ (1 + x ) × x (3 + x ) = 1 x + 1 ÷ (6 + x ) × x (3 + x )
    Remove a bracket on the right of the equation::
     1 × 3 + 1 x + 1 ÷ (1 + x ) × x (3 + x ) = 1 x + 1 ÷ (6 + x ) × x × 3 + 1 ÷ (6 + x ) × x x
    The equation is reduced to :
     3 + 1 x + 1 ÷ (1 + x ) × x (3 + x ) = 1 x + 3 ÷ (6 + x ) × x + 1 ÷ (6 + x ) × x x
     Multiply both sides of the equation by:(1 + x ) ,  (6 + x )
     3(1 + x )(6 + x ) + 1 x (1 + x )(6 + x ) + 1 x (3 + x )(6 + x ) = 1 x (1 + x )(6 + x ) + 3 x (1 + x ) + 1 x x (1 + x )
    Remove a bracket on the left of the equation:
     3 × 1(6 + x ) + 3 x (6 + x ) + 1 x (1 + x )(6 + x ) + 1 x = 1 x (1 + x )(6 + x ) + 3 x (1 + x ) + 1 x x (1 + x )
    Remove a bracket on the right of the equation::
     3 × 1(6 + x ) + 3 x (6 + x ) + 1 x (1 + x )(6 + x ) + 1 x = 1 x × 1(6 + x ) + 1 x x (6 + x ) + 3 x (1 + x ) + 1
    The equation is reduced to :
     3(6 + x ) + 3 x (6 + x ) + 1 x (1 + x )(6 + x ) + 1 x (3 + x ) = 1 x (6 + x ) + 1 x x (6 + x ) + 3 x (1 + x ) + 1 x
    Remove a bracket on the left of the equation:
     3 × 6 + 3 x + 3 x (6 + x ) + 1 x (1 + x )(6 + x ) + 1 = 1 x (6 + x ) + 1 x x (6 + x ) + 3 x (1 + x ) + 1 x
    Remove a bracket on the right of the equation::
     3 × 6 + 3 x + 3 x (6 + x ) + 1 x (1 + x )(6 + x ) + 1 = 1 x × 6 + 1 x x + 1 x x (6 + x ) + 3 x
    The equation is reduced to :
     18 + 3 x + 3 x (6 + x ) + 1 x (1 + x )(6 + x ) + 1 x = 6 x + 1 x x + 1 x x (6 + x ) + 3 x (1 + x )
    Remove a bracket on the left of the equation:
     18 + 3 x + 3 x × 6 + 3 x x + 1 x (1 + x ) = 6 x + 1 x x + 1 x x (6 + x ) + 3 x (1 + x )
    Remove a bracket on the right of the equation::
     18 + 3 x + 3 x × 6 + 3 x x + 1 x (1 + x ) = 6 x + 1 x x + 1 x x × 6 + 1 x x
    The equation is reduced to :
     18 + 3 x + 18 x + 3 x x + 1 x (1 + x )(6 + x ) = 6 x + 1 x x + 6 x x + 1 x x x
    The equation is reduced to :
     18 + 21 x + 3 x x + 1 x (1 + x )(6 + x ) + 1 x = 6 x + 1 x x + 6 x x + 1 x x x
    Remove a bracket on the left of the equation:
     18 + 21 x + 3 x x + 1 x × 1(6 + x ) + 1 x = 6 x + 1 x x + 6 x x + 1 x x x
    Remove a bracket on the right of the equation::
     18 + 21 x + 3 x x + 1 x × 1(6 + x ) + 1 x = 6 x + 1 x x + 6 x x + 1 x x x
    The equation is reduced to :
     18 + 21 x + 3 x x + 1 x (6 + x ) + 1 x x = 6 x + 1 x x + 6 x x + 1 x x x
    The equation is reduced to :
     18 + 21 x + 3 x x + 1 x (6 + x ) + 1 x x = 9 x + 1 x x + 6 x x + 1 x x x
    Remove a bracket on the left of the equation:
     18 + 21 x + 3 x x + 1 x × 6 + 1 x x = 9 x + 1 x x + 6 x x + 1 x x x
    Remove a bracket on the right of the equation::
     18 + 21 x + 3 x x + 1 x × 6 + 1 x x = 9 x + 1 x x + 6 x x + 1 x x x

    The solution of the equation:
        x1≈-3.927051 , keep 6 decimal places
        x2≈-0.572949 , keep 6 decimal places
    
    There are 2 solution(s).


解程的详细方法请参阅:《方程的解法》



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