document.write( "Question 1167875: Rita is 23, and joel is 15. How many years ago was rita 3 times as old joel?
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Algebra.Com's Answer #792486 by ikleyn(52797) $\"\"$ $\"About$

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document.write( "    23 - x = 3*(15-x)\r\n" );
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document.write( "    23 - x = 45 - 3x\r\n" );
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document.write( "    3x - x = 45 - 23\r\n" );
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document.write( "    2x     = 22\r\n" );
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document.write( "     x     = 22/2 = 11.\r\n" );
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document.write( "ANSWER.  11 years ago.\r\n" );
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