document.write( "Question 172845: 8
\n" ); document.write( "- x= 72
\n" ); document.write( "9 \n" ); document.write( "
Algebra.Com's Answer #127702 by checkley77(12844)\"\" \"About 
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8
\n" ); document.write( "- x= 72
\n" ); document.write( "9
\n" ); document.write( "8X=9*72
\n" ); document.write( "8X=648
\n" ); document.write( "X=648/8
\n" ); document.write( "X=81 ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "(8/9)81=72
\n" ); document.write( "8*81/9=72
\n" ); document.write( "648/9=72
\n" ); document.write( "72=72\r
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