document.write( "Question 726928: Janet is X, her brother is 3 years older than her. Find the sum of their age. \n" ); document.write( "
Algebra.Com's Answer #444907 by lenny460(1073)\"\" \"About 
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Janet is x years old. Her brother is 3 years older than her. Find the sum of their age.\r
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\n" ); document.write( "\n" ); document.write( "Janet is x years old.\r
\n" ); document.write( "\n" ); document.write( "Let the age of her brother be: x + 3 years.\r
\n" ); document.write( "\n" ); document.write( "Therefore:\r
\n" ); document.write( "\n" ); document.write( "The sum of their ages:\r
\n" ); document.write( "\n" ); document.write( "x + x + 3 = 2x + 3\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
\n" ); document.write( "\n" ); document.write( "2x + 3
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