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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 （0.55x+0.6x+0.85x）/（400-x） = 0.57 .
    Question type: Equation
    Solution:Original question:
     (
11
20
 x +
3
5
 x +
17
20
 x ) ÷ (400 − x ) =
57
100
     Multiply both sides of the equation by:(400 − x )
     (
11
20
 x +
3
5
 x +
17
20
 x ) =
57
100
(400 − x )
    Remove a bracket on the left of the equation:：
     
11
20
 x +
3
5
 x +
17
20
 x =
57
100
(400 − x )
    Remove a bracket on the right of the equation:：
     
11
20
 x +
3
5
 x +
17
20
 x =
57
100
 × 400 −
57
100
 x
    The equation is reduced to :
     
11
20
 x +
3
5
 x +
17
20
 x = 228 −
57
100
 x
    The equation is reduced to :
     2 x = 228 −
57
100
 x

    Transposition :
     2 x +
57
100
 x = 228

    Combine the items on the left of the equation:
     
257
100
 x = 228

    The coefficient of the unknown number is reduced to 1 :
      x = 228 ÷
257
100
        = 228 ×
100
257

    We obtained :
      x =
22800
257
    This is the solution of the equation.

    Convert the result to decimal form :
      x = 88.715953



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