document.write( "Question 678282: The sum of two numbers is 72, and twice their difference is 24. What is the smaller of the two munbers? \r
\n" ); document.write( "\n" ); document.write( "30
\n" ); document.write( "48
\n" ); document.write( "42
\n" ); document.write( "24
\n" ); document.write( "

Algebra.Com's Answer #421251 by rm29924(97)\"\" \"About 
You can put this solution on YOUR website!
The answer is 30.
\n" ); document.write( "let x=the larger number
\n" ); document.write( "let y= the smaller number
\n" ); document.write( "x+y=72
\n" ); document.write( "2(x-y)=24
\n" ); document.write( "Take the first equation and get x by itself.
\n" ); document.write( "x+y=72
\n" ); document.write( "x=72-y
\n" ); document.write( "Then plug in that value for x in the second equation.
\n" ); document.write( "2(72-y-y)=24
\n" ); document.write( "144-2y-2y=24
\n" ); document.write( "144-4y=24
\n" ); document.write( "-4y=-120
\n" ); document.write( "y=30\r
\n" ); document.write( "\n" ); document.write( "
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