document.write( "Question 1115585: The following is known about three numbers: Twice the largest number plus the second largest
\n" ); document.write( " number plus three times the smallest number is 147. The sum of the second largest number and twice
\n" ); document.write( " the smallest number is 29 more than the largest number. The largest number is 15 less than twice
\n" ); document.write( " the second largest number. Find the three numbers.
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Algebra.Com's Answer #730431 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "let’s the largest number be \"x\", the second largest number \"y\", and the smallest number \"z\"\r
\n" ); document.write( "\n" ); document.write( "given:
\n" ); document.write( "Twice the largest number plus the second largest number plus three times the smallest number is \"147\". \r
\n" ); document.write( "\n" ); document.write( "\"2x%2By%2B3z=147\".....eq.1\r
\n" ); document.write( "\n" ); document.write( "The sum of the second largest number and twice the smallest number is \"29\" more than the largest number.
\n" ); document.write( " \"y%2B2z=x%2B29\".....eq.2\r
\n" ); document.write( "\n" ); document.write( "The largest number is \"15\" less than twice the second largest number. \r
\n" ); document.write( "\n" ); document.write( "\"x=2y-15\".....eq.3\r
\n" ); document.write( "\n" ); document.write( "to find the three numbers, solve the system:
\n" ); document.write( "\"2x%2By%2B3z=147\".....eq.1
\n" ); document.write( "\"y%2B2z=x%2B29\".....eq.2
\n" ); document.write( "\"x=2y-15\".....eq.3
\n" ); document.write( "----------------------------
\n" ); document.write( "\"2x%2By%2B3z=147\".....eq.1...substitute \"x\" from eq.3\r
\n" ); document.write( "\n" ); document.write( "\"2%282y-15%29%2By%2B3z=147\"\r
\n" ); document.write( "\n" ); document.write( "\"4y-30%2By%2B3z=147\"\r
\n" ); document.write( "\n" ); document.write( "\"5y=147-3z%2B30\"\r
\n" ); document.write( "\n" ); document.write( "\"y=%28147-3z%2B30%29%2F5\"....eq.1a\r
\n" ); document.write( "\n" ); document.write( "substitute \"y\" from eq.1a and \"x\" from eq.3 in eq.2\r
\n" ); document.write( "\n" ); document.write( "\"%28147-3z%2B30%29%2F5%2B2z=2y-15%2B29\".....eq.2\r
\n" ); document.write( "\n" ); document.write( "\"%28147-3z%2B30%29%2F5%2B2z=2%28147-3z%2B30%29%2F5-15%2B29\"....multiply by 5\r
\n" ); document.write( "\n" ); document.write( "\"147-3z%2B30%2B10z=2%28147-3z%2B30%29-75%2B145\"\r
\n" ); document.write( "\n" ); document.write( "\"177%2B7z=294-6z%2B60-75%2B145\"\r
\n" ); document.write( "\n" ); document.write( "\"177%2B7z=424-6z\"\r
\n" ); document.write( "\n" ); document.write( "\"6z%2B7z=424-177\"
\n" ); document.write( "\"13z=247\"\r
\n" ); document.write( "\n" ); document.write( "\"z=247%2F13\"\r
\n" ); document.write( "\n" ); document.write( "\"z=19\"\r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( "\"y=%28147-3z%2B30%29%2F5\"....eq.1a , substitute \"z\"\r
\n" ); document.write( "\n" ); document.write( "\"y=%28147-3%2A19%2B30%29%2F5\"\r
\n" ); document.write( "\n" ); document.write( "\"y=%28147-57%2B30%29%2F5\"\r
\n" ); document.write( "\n" ); document.write( "\"y=120%2F5\"\r
\n" ); document.write( "\n" ); document.write( "\"y=24\"\r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( "\"x=2y-15\".....eq.3 substitute \"y\"\r
\n" ); document.write( "\n" ); document.write( "\"x=2%2A24-15\"\r
\n" ); document.write( "\n" ); document.write( "\"x=48-15\"\r
\n" ); document.write( "\n" ); document.write( "\"x=33\"\r
\n" ); document.write( "\n" ); document.write( "so, your numbers are: \"33\", \"24\", and \"19\"\r
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