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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 500/(0.5+R) = 420/R .
    Question type: Equation
    Solution:Original question:
     500 ÷ (
1
2
+ R ) = 420 ÷ R
     Multiply both sides of the equation by:(
1
2
+ R ) ,   R
     500 R = 420(
1
2
+ R )
    Remove a bracket on the right of the equation::
     500 R = 420 ×
1
2
+ 420 R
    The equation is reduced to :
     500 R = 210 + 420 R

    Transposition :
     500 R 420 R = 210

    Combine the items on the left of the equation:
     80 R = 210

    The coefficient of the unknown number is reduced to 1 :
      R = 210 ÷ 80
        = 210 ×
1
80
        = 21 ×
1
8

    We obtained :
      R =
21
8
    This is the solution of the equation.

    Convert the result to decimal form :
      R = 2.625



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