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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-180(1-25%) = (X-180-4000x80%)x(1-75%) .
    Question type: Equation
    Solution:Original question:
      X − 180(1 −
25
100
) = ( X − 180 − 4000 X ×
80
100
) X (1 −
75
100
)
    Remove the bracket on the left of the equation:
     Left side of the equation = X − 180 × 1 + 180 ×
25
100
                                             = X − 180 + 45
                                             = X − 135
    The equation is transformed into :
      X − 135 = ( X − 180 − 4000 X ×
80
100
) X (1 −
75
100
)
    Remove the bracket on the right of the equation:
     Right side of the equation = X X (1 −
75
100
) − 180 X (1 −
75
100
) − 4000 X ×
80
100
 X (1 −
75
100
)
                                               = X X (1 −
75
100
) − 180 X (1 −
75
100
) − 3200 X X (1 −
75
100
)
                                               = X X × 1 − X X ×
75
100
 − 180 X (1 −
75
100
) − 3200 X X
                                               = X X × 1 − X X ×
75
100
 − 180 X × 1 + 180 X ×
75
100
                                               = X X × 1 − X X ×
75
100
 − 180 X + 135 X − 3200 X
                                               = X X × 1 − X X ×
75
100
 − 45 X − 3200 X X (1 −
75
100
)
                                               = X X × 1 − X X ×
75
100
 − 45 X − 3200 X X × 1
                                               = X X × 1 − X X ×
75
100
 − 45 X − 3200 X X + 2400
    The equation is transformed into :
      X − 135 = X X × 1 − X X ×
75
100
 − 45 X − 3200 X X + 2400

    the solutions is:
        X=-45    
    There are 1 solution(s).

解方程的详细方法请参阅：《方程的解法》


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