SOLUTION: Solve the formula for the indicated variable. I= E/R+r for R

SOLUTION: Solve the formula for the indicated variable. I= E/R+r for R

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Question 364054: Solve the formula for the indicated variable.
I= E/R+r for R
Answer by vasumathi(46) (Show Source): You can put this solution on YOUR website!
Solution :I= E/R+r for R
subtract r on both sides
I-r =E/R + r - r
I -r = E/R
Multiply both sides by R
R*(I-r)= E/R *R
R*(I-r) = E
Divide both sides by (I-r)
R*(I-r)/(I-r) = E/(I-r)
R = E/(I-r)
Note : The basic idea here is to isolate R
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