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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 X = 1400-1400÷（1+0.4） .
    Question type: Equation
    Solution:Original question:
      X = 1400 − 1400 ÷ (1 +
2
5
)
     Multiply both sides of the equation by:(1 +
2
5
)
      X (1 +
2
5
) = 1400(1 +
2
5
) − 1400
    Remove a bracket on the left of the equation:：
      X × 1 + X ×
2
5
 = 1400(1 +
2
5
) − 1400
    Remove a bracket on the right of the equation:：
      X × 1 + X ×
2
5
 = 1400 × 1 + 1400 ×
2
5
 − 1400
    The equation is reduced to :
      X × 1 + X ×
2
5
 = 1400 + 560 − 1400
    The equation is reduced to :
     
7
5
 X = 560

    The coefficient of the unknown number is reduced to 1 :
      X = 560 ÷
7
5
        = 560 ×
5
7
        = 80 × 5

    We obtained :
      X = 400
    This is the solution of the equation.



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