document.write( "Question 998589: jon sells books on the internet for $12.oo each and spent 180.00 on shipping last month. represent on a numberline the number of books,x,e sold last month if he earned a total of $720.00
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Algebra.Com's Answer #616360 by ikleyn(52838)\"\" \"About 
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\n" ); document.write( "x*12 -180 = 720     (if I correctly understand the condition).\r
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\n" ); document.write( "\n" ); document.write( "12x = 720 + 180 = 900,\r
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\n" ); document.write( "\n" ); document.write( "x = \"900%2F12\" = 75.\r
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\n" ); document.write( "\n" ); document.write( "Answer.  75 books.\r
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