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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 （0.582-0.574）*1000+（0.583-0.574）*1000+（z-0.574）*1000+（0.576-0.574）*1200-0.4 = 20 .
    Question type: Equation
    Solution:Original question:
     (
291
500
 −
287
500
) × 1000 + (
583
1000
 −
287
500
) × 1000 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200 −
2
5
 = 20
    Remove the bracket on the left of the equation:
     Left side of the equation =
291
500
 × 1000 −
287
500
 × 1000 + (
583
1000
 −
287
500
) × 1000 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200 −
2
5
                                             = 582 − 574 + (
583
1000
 −
287
500
) × 1000 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200 −
2
5
                                             =
38
5
 + (
583
1000
 −
287
500
) × 1000 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200
                                             =
38
5
 +
583
1000
 × 1000 −
287
500
 × 1000 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200
                                             =
38
5
 + 583 − 574 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200
                                             =
83
5
 + ( z −
287
500
) × 1000 + (
72
125
 −
287
500
) × 1200
                                             =
83
5
 + z × 1000 −
287
500
 × 1000 + (
72
125
 −
287
500
) × 1200
                                             =
83
5
 + z × 1000 − 574 + (
72
125
 −
287
500
) × 1200
                                             = -
2787
5
 + 1000 z + (
72
125
 −
287
500
) × 1200
                                             = -
2787
5
 + 1000 z +
72
125
 × 1200 −
287
500
 × 1200
                                             = -
2787
5
 + 1000 z +
3456
5
 −
3444
5
                                             = - 555 + 1000 z
    The equation is transformed into :
      - 555 + 1000 z = 20

    Transposition :
     1000 z = 20 + 555

    Combine the items on the right of the equation:
     1000 z = 575

    The coefficient of the unknown number is reduced to 1 :
      z = 575 ÷ 1000
        = 575 ×
1
1000
        = 23 ×
1
40

    We obtained :
      z =
23
40
    This is the solution of the equation.

    Convert the result to decimal form :
      z = 0.575



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