document.write( "Question 372439: Solve the formula for the indicated variable\r
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Algebra.Com's Answer #265278 by user_dude2008(1862)\"\" \"About 
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P=a+b+4c\r
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\n" ); document.write( "\n" ); document.write( "P-b=a+4c\r
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\n" ); document.write( "\n" ); document.write( "P-b-4c=a\r
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\n" ); document.write( "\n" ); document.write( "Answer: a=P-b-4c
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