document.write( "Question 295137: Solve the following system by the substitution method.
\n" ); document.write( "x+3y=2
\n" ); document.write( "-x+y=1
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Algebra.Com's Answer #212746 by edjones(8007)\"\" \"About 
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x+3y=2
\n" ); document.write( "-x+y=1
\n" ); document.write( ".
\n" ); document.write( "y=x+1
\n" ); document.write( "x+3(x+1)=2 substitute x+1 for y
\n" ); document.write( "x+3x+3=2
\n" ); document.write( "4x=-1
\n" ); document.write( "x=-1/4
\n" ); document.write( "y=3/4
\n" ); document.write( ".
\n" ); document.write( "Ed
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