document.write( "Question 208787This question is from textbook algebra 1 an integrated approach
\n" ); document.write( ": solve the formulas below for the indicated variable.show your work.\r
\n" ); document.write( "\n" ); document.write( "e/R+r=I, for R
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Algebra.Com's Answer #157903 by RAY100(1637)\"\" \"About 
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(e/R) +r =I,,,,,subst r
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\n" ); document.write( "e/R = I-r,,,,,,,,divide thru by (I-r),,,,multiply thru by R
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\n" ); document.write( "e/(I-r) = R
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\n" ); document.write( "If problem is e/(R+r) = I,,,,,,,,ccross multiply
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\n" ); document.write( "e = (R+r)I,,,,,,divide thru by I
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\n" ); document.write( "e/I = R+r,,,,,,,substract r
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\n" ); document.write( "(e/I) -r =R
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