document.write( "Question 885259: A book costs $3. Mr. Grayson spent $81 on books. The number of books, b, can be found by solving the equation 3b = 81. Which is the best method for solving the equation? \n" ); document.write( "
Algebra.Com's Answer #535013 by jim_thompson5910(35256)\"\" \"About 
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Divide both sides by 3 to get\r
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\n" ); document.write( "\n" ); document.write( "3b = 81\r
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\n" ); document.write( "\n" ); document.write( "3b/3 = 81/3\r
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\n" ); document.write( "\n" ); document.write( "b = 27\r
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\n" ); document.write( "\n" ); document.write( "So Mr Grayson bought 27 books
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