document.write( "Question 1208770: y=-x+7 and y=x+1 \n" ); document.write( "
Algebra.Com's Answer #847212 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
The two different expressions for y equal.\r
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\n" ); document.write( "\n" ); document.write( "\"-x%2B7=x%2B1\"\r
\n" ); document.write( "\n" ); document.write( "\"-x-x=1-7\"\r
\n" ); document.write( "\n" ); document.write( "\"-2x=-6\"\r
\n" ); document.write( "\n" ); document.write( "\"x=3\"\r
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\n" ); document.write( "\n" ); document.write( "Substitute into either original equation.
\n" ); document.write( "\"y=x%2B1\"\r
\n" ); document.write( "\n" ); document.write( "\"y=3%2B1\"\r
\n" ); document.write( "\n" ); document.write( "\"y=4\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"system%28x=3%2Cy=4%29\"
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