document.write( "Question 933025: what is a system equation when
\n" ); document.write( "the sum is 14 and the difference is 4 \n" ); document.write( "

Algebra.Com's Answer #566543 by MathLover1(20855) $\"\"$ $\"About$

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\n" ); document.write( "the sum is $\"14\"$ :\r
\n" ); document.write( "\n" ); document.write( " $\"x%2By=14\"$ .....eq.1 \r
\n" ); document.write( "\n" ); document.write( "and the difference is $\"4\"$ :\r
\n" ); document.write( "\n" ); document.write( " $\"x-y=4\"$ .....eq.2\r
\n" ); document.write( "\n" ); document.write( "system is:
\n" ); document.write( " $\"x%2By=14\"$ .....eq.1
\n" ); document.write( " $\"x-y=4\"$ .....eq.2
\n" ); document.write( "_____________________ to solve, add eq.1 and eq.2\r
\n" ); document.write( "\n" ); document.write( " $\"x%2Bcross%28y%29%2Bx-cross%28y%29=14%2B4\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2x=18\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=9\"$ \r
\n" ); document.write( "\n" ); document.write( "go to $\"x%2By=14\"$ .....eq.1 substitute $\"9\"$ for $\"x\"$ and solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"9%2By=14\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=14-9\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=5\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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