Mathematics
         
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Solution inequality:
    Directly input the univariate inequality (that is, the inequality containing only one variable), set the angular unit (radian or angle) of the trigonometric function, and click the "Next" button to obtain the solution set of the inequality.
    It supports mathematical functions (including trigonometric functions).
    Current location:Mathematical operation > History of Inequality Computation > Answer

    Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation N*129*0.2+2000 = N*129*0.8-2000 .
    Question type: Equation
    Solution:Original question:
      N × 129 ×
1
5
+ 2000 = N × 129 ×
4
5
2000
     Left side of the equation = N ×
129
5
+ 2000
    The equation is transformed into :
     
129
5
N + 2000 = N × 129 ×
4
5
2000
     Right side of the equation = N ×
516
5
2000
    The equation is transformed into :
     
129
5
N + 2000 =
516
5
N 2000

    Transposition :
     
129
5
N
516
5
N = - 20002000

    Combine the items on the left of the equation:
      -
387
5
N = - 20002000

    Combine the items on the right of the equation:
      -
387
5
N = - 4000

    By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
     4000 =
387
5
N

    If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :
     
387
5
N = 4000

    The coefficient of the unknown number is reduced to 1 :
      N = 4000 ÷
387
5
        = 4000 ×
5
387

    We obtained :
      N =
20000
387
    This is the solution of the equation.

    Convert the result to decimal form :
      N = 51.679587



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