document.write( "Question 1116563: solve by addition method.\r
\n" ); document.write( "\n" ); document.write( "x-4y=3
\n" ); document.write( "x+7y=-8 \n" ); document.write( "

Algebra.Com's Answer #731451 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "x-4y=3
\n" ); document.write( "x+7y=-8
\n" ); document.write( "----------------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"system%28x-4y=3%2C-x-7y=8%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28x-4y%29%2B%28-x-7y%29=11\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"-11y=11\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28y=-1%29\"$ \r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( " $\"system%287x-28y=21%2C4x%2B28y=-32%29\"$ , and you may know what to do next... \n" ); document.write( "

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