document.write( "Question 1188028: y=2x+2
\n" ); document.write( "-x+y= -2
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Algebra.Com's Answer #819084 by MathLover1(20849) $\"\"$ $\"About$

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\n" ); document.write( " $\"y=2x%2B2\"$ .......eq.1
\n" ); document.write( " $\"-x%2By=+-2\"$ .........eq.2
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\n" ); document.write( "\n" ); document.write( "substitute $\"y\"$ from eq.1 in eq.2\r
\n" ); document.write( "\n" ); document.write( " $\"2x%2B2-x=+-2\"$ .........eq.2
\n" ); document.write( " $\"x%2B2=+-2\"$
\n" ); document.write( " $\"x=+-2-2\"$
\n" ); document.write( " $\"x=+-4\"$ \r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( " $\"y=2x%2B2\"$ .......eq.1, substitute $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=2%28-4%29%2B2\"$
\n" ); document.write( " $\"y=-8%2B2\"$
\n" ); document.write( " $\"y=-6\"$ \r
\n" ); document.write( "\n" ); document.write( "solution: $\"x=+-4\"$ , $\"y=-6\"$ \r
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