document.write( "Question 1024638: niel is three years older than his sister together there ages add up to 27 how old are they \n" ); document.write( "

Algebra.Com's Answer #640026 by Cromlix(4381) $\"\"$ $\"About$

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Hi there,
\n" ); document.write( "Make neil's sister = x
\n" ); document.write( "neil is x + 3
\n" ); document.write( "x + (x + 3) = 27
\n" ); document.write( "x + x + 3 = 27
\n" ); document.write( "Collect like terms.
\n" ); document.write( "x + x = 27 - 3
\n" ); document.write( "2x = 24
\n" ); document.write( "x = 12.
\n" ); document.write( "Neil is 15 years old
\n" ); document.write( "Neil's sister is 12 years old.
\n" ); document.write( "Hope this helps :-) \n" ); document.write( "

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