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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 100/x+100/(x+50)+76/(72+x) = 1.5 .
    Question type: Equation
    Solution:Original question:
     100 ÷ x + 100 ÷ ( x + 50) + 76 ÷ (72 + x ) =
3
2
     Multiply both sides of the equation by: x
     100 + 100 ÷ ( x + 50) × x + 76 ÷ (72 + x ) × x =
3
2
x
     Multiply both sides of the equation by:( x + 50)
     100( x + 50) + 100 x + 76 ÷ (72 + x ) × x ( x + 50) =
3
2
x ( x + 50)
    Remove a bracket on the left of the equation:
     100 x + 100 × 50 + 100 x + 76 ÷ (72 + x ) × x ( x + 50) =
3
2
x ( x + 50)
    Remove a bracket on the right of the equation::
     100 x + 100 × 50 + 100 x + 76 ÷ (72 + x ) × x ( x + 50) =
3
2
x x +
3
2
x × 50
    The equation is reduced to :
     100 x + 5000 + 100 x + 76 ÷ (72 + x ) × x ( x + 50) =
3
2
x x + 75 x
    The equation is reduced to :
     200 x + 5000 + 76 ÷ (72 + x ) × x ( x + 50) =
3
2
x x + 75 x
     Multiply both sides of the equation by:(72 + x )
     200 x (72 + x ) + 5000(72 + x ) + 76 x ( x + 50) =
3
2
x x (72 + x ) + 75 x (72 + x )
    Remove a bracket on the left of the equation:
     200 x × 72 + 200 x x + 5000(72 + x ) + 76 x ( x + 50) =
3
2
x x (72 + x ) + 75 x (72 + x )
    Remove a bracket on the right of the equation::
     200 x × 72 + 200 x x + 5000(72 + x ) + 76 x ( x + 50) =
3
2
x x × 72 +
3
2
x x x + 75 x (72 + x )
    The equation is reduced to :
     14400 x + 200 x x + 5000(72 + x ) + 76 x ( x + 50) = 108 x x +
3
2
x x x + 75 x (72 + x )
    Remove a bracket on the left of the equation:
     14400 x + 200 x x + 5000 × 72 + 5000 x + 76 x ( x + 50) = 108 x x +
3
2
x x x + 75 x (72 + x )
    Remove a bracket on the right of the equation::
     14400 x + 200 x x + 5000 × 72 + 5000 x + 76 x ( x + 50) = 108 x x +
3
2
x x x + 75 x × 72 + 75 x
    The equation is reduced to :
     14400 x + 200 x x + 360000 + 5000 x + 76 x ( x + 50) = 108 x x +
3
2
x x x + 5400 x + 75 x x
    The equation is reduced to :
     19400 x + 200 x x + 360000 + 76 x ( x + 50) = 108 x x +
3
2
x x x + 5400 x + 75 x x
    Remove a bracket on the left of the equation:
     19400 x + 200 x x + 360000 + 76 x x + 76 x × 50 = 108 x x +
3
2
x x x + 5400 x + 75 x x
    The equation is reduced to :
     19400 x + 200 x x + 360000 + 76 x x + 3800 x = 108 x x +
3
2
x x x + 5400 x + 75 x x
    The equation is reduced to :
     23200 x + 200 x x + 360000 + 76 x x = 108 x x +
3
2
x x x + 5400 x + 75 x x

    The solution of the equation:
        x1≈-64.398485 , keep 6 decimal places
        x2≈-24.669637 , keep 6 decimal places
        x3≈151.068122 , 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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