document.write( "Question 349796: Bill is 7 years older than his dog. The sum of their ages is 19. How old is Bill?
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Algebra.Com's Answer #250006 by nyc_function(2741)\"\" \"About 
You can put this solution on YOUR website!
If Bill's age is x, his dog's age is (x - 7)\r
\n" ); document.write( "\n" ); document.write( "That's how I would have done it, anyway. That way you can solve for Bill's age as x, which is what the question asks.\r
\n" ); document.write( "\n" ); document.write( "Now since the sum of their ages is 19, you know that:\r
\n" ); document.write( "\n" ); document.write( "x + (x - 7) = 19\r
\n" ); document.write( "\n" ); document.write( "2x - 7 = 19\r
\n" ); document.write( "\n" ); document.write( "2x = 19 + 7\r
\n" ); document.write( "\n" ); document.write( "2x = 26\r
\n" ); document.write( "\n" ); document.write( "x = 26/2\r
\n" ); document.write( "\n" ); document.write( "x = 13\r
\n" ); document.write( "\n" ); document.write( "You actually COULD get the answer with your equation, but x would be the dog's age.\r
\n" ); document.write( "\n" ); document.write( "2x + 7 = 19
\n" ); document.write( "2x = 19 - 7
\n" ); document.write( "2x = 12
\n" ); document.write( "x = 6\r
\n" ); document.write( "\n" ); document.write( "Notice that 6 is seven years younger than 13.\r
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\n" ); document.write( "\n" ); document.write( "Bill is 13.
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