SOLUTION: Solve equation for y I=E/(R+r) for R

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Question 121026: Solve equation for y
I=E/(R+r) for R
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
given:
I=E%2F%28R%2Br%29
to do:......solve for R
I=E%2F%28R%2Br%29+..........multiply both sides by +%28R%2Br%29+

I%28R%2Br%29=%28R%2Br%29%28E%2F%28R%2Br%29%29+..........simplify

I%28R%2Br%29=cross%28%28R%2Br%29%29%28E%2Fcross%28%28R%2Br%29%29%29+..........
IR%2B+Ir+=E.......move Ir to the right

IR+=E+-+Ir....divide both sides by I

IR%2FI+=E%2FI+-+Ir%2FI....simplify

cross%28I%29R%2Fcross%28I%29+=E%2FI+-+cross%28I%29r%2Fcross%28I%29....

R+=E%2FI+-+r....