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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 1/(1/390+1/510)*I-3 = (0.02-I)*8400/43 .
    Question type: Equation
    Solution:Original question:
     1 ÷ (1 ÷ 390 + 1 ÷ 510) × I − 3 = (
1
50
 − I ) × 8400 ÷ 43
     Multiply both sides of the equation by:(1 ÷ 390 + 1 ÷ 510)
     1 I − 3(1 ÷ 390 + 1 ÷ 510) = (
1
50
 − I ) × 8400 ÷ 43 × (1 ÷ 390 + 1 ÷ 510)
    Remove a bracket on the left of the equation:：
     1 I − 3 × 1 ÷ 390 − 3 × 1 ÷ 510 = (
1
50
 − I ) × 8400 ÷ 43 × (1 ÷ 390 + 1 ÷ 510)
    Remove a bracket on the right of the equation:：
     1 I − 3 × 1 ÷ 390 − 3 × 1 ÷ 510 =
1
50
 × 8400 ÷ 43 × (1 ÷ 390 + 1 ÷ 510) − I × 8400 ÷ 43 × (1 ÷ 390 + 1 ÷ 510)
    The equation is reduced to :
     1 I −
1
130
 −
1
170
 =
168
43
(1 ÷ 390 + 1 ÷ 510) − I ×
8400
43
(1 ÷ 390 + 1 ÷ 510)
    The equation is reduced to :
     1 I −
3
221
 =
168
43
(1 ÷ 390 + 1 ÷ 510) − I ×
8400
43
(1 ÷ 390 + 1 ÷ 510)
    Remove a bracket on the right of the equation:：
     1 I −
3
221
 =
168
43
 × 1 ÷ 390 +
168
43
 × 1 ÷ 510 − I ×
8400
43
(1 ÷ 390 + 1 ÷ 510)
    The equation is reduced to :
     1 I −
3
221
 =
28
2795
 +
28
3655
 − I ×
8400
43
(1 ÷ 390 + 1 ÷ 510)
    The equation is reduced to :
     1 I −
3
221
 =
168
9503
 − I ×
8400
43
(1 ÷ 390 + 1 ÷ 510)
    Remove a bracket on the right of the equation:：
     1 I −
3
221
 =
168
9503
 − I ×
8400
43
 × 1 ÷ 390 − I ×
8400
43
 × 1 ÷ 510
    The equation is reduced to :
     1 I −
3
221
 =
168
9503
 − I ×
280
559
 − I ×
280
731
    The equation is reduced to :
     1 I −
3
221
 =
168
9503
 −
8400
9503
 I

    Transposition :
     1 I +
8400
9503
 I =
168
9503
 +
3
221

    Combine the items on the left of the equation:
     
17903
9503
 I =
168
9503
 +
3
221

    Combine the items on the right of the equation:
     
17903
9503
 I =
297
9503

    The coefficient of the unknown number is reduced to 1 :
      I =
297
9503
 ÷
17903
9503
        =
297
9503
 ×
9503
17903
        = 297 ×
1
17903

    We obtained :
      I =
297
17903
    This is the solution of the equation.

    Convert the result to decimal form :
      I = 0.016589



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