document.write( "Question 533051: I need to solve this by substitution
\n" ); document.write( "y=2x+3
\n" ); document.write( "y=4x-1 \n" ); document.write( "
Algebra.Com's Answer #350946 by oberobic(2304)\"\" \"About 
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y = 2x+3
\n" ); document.write( "y = 4x-1
\n" ); document.write( ".
\n" ); document.write( "y = y
\n" ); document.write( "so
\n" ); document.write( "2x +3 = 4x -1
\n" ); document.write( "-2x = -4
\n" ); document.write( "x = 2
\n" ); document.write( ".
\n" ); document.write( "substitute this value to find 'y'
\n" ); document.write( ".
\n" ); document.write( "y = 7 \n" ); document.write( "
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