document.write( "Question 4991: translate to a system of equations and solve.\r
\n" ); document.write( "\n" ); document.write( "the sum of two numbers is 30. their difference is 40. find the numbers. \n" ); document.write( "

Algebra.Com's Answer #2482 by xcentaur(357) $\"\"$ $\"About$

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let the numbers be x and y
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\n" ); document.write( "x+y=30
\n" ); document.write( "x-y=40
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\n" ); document.write( "adding the two eqns we get
\n" ); document.write( "2x=70
\n" ); document.write( "x=35
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\n" ); document.write( "y=30-x
\n" ); document.write( "y=30-35
\n" ); document.write( "y=-5
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\n" ); document.write( "Hence the numbers are: 35,-5 \n" ); document.write( "

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