document.write( "Question 1115304: The sum of the ages of a father and his son is 56years.Four years ago,the father was 3 times as old as the son.Calculate the present age of the father and the son.Use a table \n" ); document.write( "
Algebra.Com's Answer #730248 by josgarithmetic(39625)\"\" \"About 
You can put this solution on YOUR website!
\"Use a table\"
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\n" ); document.write( "Why? Is it necessary?\r
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\n" ); document.write( "\n" ); document.write( "This is a system transcribed literally from the description:
\n" ); document.write( "\"system%28f%2Bb=56%2Cf-4=3%28b-4%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "steps:
\n" ); document.write( "\"f-4=3b-12\"
\n" ); document.write( "\"f-3b=-12%2B4\"
\n" ); document.write( "\"f-3b=-8\"\r
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\n" ); document.write( "\"system%28f%2Bb=56%2Cf-3b=-8%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"b-%28-3b%29=56-%28-8%29\"\r
\n" ); document.write( "\n" ); document.write( "\"4b=64\"\r
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