document.write( "Question 968087: anna will be F years old X years from now. how old is she now?? \n" ); document.write( "

Algebra.Com's Answer #591670 by Edwin McCravy(20056) $\"\"$ $\"About$

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anna will be F years old X years from now. how old is she now??
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document.write( "To find out how to do it, make up number for F and X.  Let's make\r\n" );
document.write( "up F=14, and make up X=5.  If it were that way, the problem would be\r\n" );
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\n" ); document.write( "anna will be 14 years old 5 years from now. how old is she now??
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document.write( "You can solve that easily and get that she must be 9 years old.\r\n" );
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document.write( "Now we ask ourselves this question: \"How did we get 9?\"\r\n" );
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document.write( "The answer to that question is: \"We subtracted 14-5 and got 9.\"\r\n" );
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document.write( "So instead of subtracting 14-5 for our made-up problem, we do a \r\n" );
document.write( "similar thing with our original problem and subtract F-X instead \r\n" );
document.write( "of 14-5.\r\n" );
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document.write( "Answer: F-X\r\n" );
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document.write( "[Note, when we subtract two numbers, like 14-5, we get a third \r\n" );
document.write( "number, like 9, but when we subtract two letters, like F-X, we \r\n" );
document.write( "just indicate that subtraction F-X and consider that, just as \r\n" );
document.write( "it is, \"F-X\", to be the third number.]\r\n" );
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document.write( "Edwin

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