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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/(2+x)+1/(3+x) = 1/(5+x) .
    Question type: Equation
    Solution:Original question:
     1 ÷ x + 1 ÷ (2 + x ) + 1 ÷ (3 + x ) = 1 ÷ (5 + x )
     Multiply both sides of the equation by: x  ,  (5 + x )
     1(5 + x ) + 1 ÷ (2 + x ) × x (5 + x ) + 1 ÷ (3 + x ) × x (5 + x ) = 1 x
    Remove a bracket on the left of the equation::
     1 × 5 + 1 x + 1 ÷ (2 + x ) × x (5 + x ) + 1 ÷ (3 + x ) × x (5 + x ) = 1 x
    The equation is reduced to :
     5 + 1 x + 1 ÷ (2 + x ) × x (5 + x ) + 1 ÷ (3 + x ) × x (5 + x ) = 1 x
     Multiply both sides of the equation by:(2 + x )
     5(2 + x ) + 1 x (2 + x ) + 1 x (5 + x ) + 1 ÷ (3 + x ) × x (5 + x ) = 1 x (2 + x )
    Remove a bracket on the left of the equation:
     5 × 2 + 5 x + 1 x (2 + x ) + 1 x (5 + x ) + 1 ÷ (3 + x ) = 1 x (2 + x )
    Remove a bracket on the right of the equation::
     5 × 2 + 5 x + 1 x (2 + x ) + 1 x (5 + x ) + 1 ÷ (3 + x ) = 1 x × 2 + 1 x x
    The equation is reduced to :
     10 + 5 x + 1 x (2 + x ) + 1 x (5 + x ) + 1 ÷ (3 + x ) × x = 2 x + 1 x x
     Multiply both sides of the equation by:(3 + x )
     10(3 + x ) + 5 x (3 + x ) + 1 x (2 + x )(3 + x ) + 1 x (5 + x ) = 2 x (3 + x ) + 1 x x (3 + x )
    Remove a bracket on the left of the equation:
     10 × 3 + 10 x + 5 x (3 + x ) + 1 x (2 + x )(3 + x ) + 1 = 2 x (3 + x ) + 1 x x (3 + x )
    Remove a bracket on the right of the equation::
     10 × 3 + 10 x + 5 x (3 + x ) + 1 x (2 + x )(3 + x ) + 1 = 2 x × 3 + 2 x x + 1 x x (3 + x )
    The equation is reduced to :
     30 + 10 x + 5 x (3 + x ) + 1 x (2 + x )(3 + x ) + 1 x = 6 x + 2 x x + 1 x x (3 + x )
    Remove a bracket on the left of the equation:
     30 + 10 x + 5 x × 3 + 5 x x + 1 x (2 + x ) = 6 x + 2 x x + 1 x x (3 + x )
    Remove a bracket on the right of the equation::
     30 + 10 x + 5 x × 3 + 5 x x + 1 x (2 + x ) = 6 x + 2 x x + 1 x x × 3 + 1 x x
    The equation is reduced to :
     30 + 10 x + 15 x + 5 x x + 1 x (2 + x )(3 + x ) = 6 x + 2 x x + 3 x x + 1 x x x
    The equation is reduced to :
     30 + 25 x + 5 x x + 1 x (2 + x )(3 + x ) + 1 x = 6 x + 2 x x + 3 x x + 1 x x x
    Remove a bracket on the left of the equation:
     30 + 25 x + 5 x x + 1 x × 2(3 + x ) + 1 x = 6 x + 2 x x + 3 x x + 1 x x x
    The equation is reduced to :
     30 + 25 x + 5 x x + 2 x (3 + x ) + 1 x x = 6 x + 2 x x + 3 x x + 1 x x x
    Remove a bracket on the left of the equation:
     30 + 25 x + 5 x x + 2 x × 3 + 2 x x = 6 x + 2 x x + 3 x x + 1 x x x
    The equation is reduced to :
     30 + 25 x + 5 x x + 6 x + 2 x x + 1 = 6 x + 2 x x + 3 x x + 1 x x x
    The equation is reduced to :
     30 + 31 x + 5 x x + 2 x x + 1 x x = 6 x + 2 x x + 3 x x + 1 x x x
    Remove a bracket on the left of the equation:
     30 + 31 x + 5 x x + 2 x x + 1 x x = 6 x + 2 x x + 3 x x + 1 x x x

    The solution of the equation:
        x1≈-6.517113 , keep 6 decimal places
        x2≈-2.596424 , keep 6 decimal places
        x3≈-0.886462 , keep 6 decimal places
    
    There are 3 solution(s).


解程的详细方法请参阅:《方程的解法》



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