document.write( "Question 394304: how do you solve
\n" ); document.write( "y=3x
\n" ); document.write( "y=x-4
\n" ); document.write( "using substitution
\n" ); document.write( "

Algebra.Com's Answer #279891 by Alan3354(69443)\"\" \"About 
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how do you solve
\n" ); document.write( "y=3x
\n" ); document.write( "y=x-4
\n" ); document.write( "using substitution
\n" ); document.write( "----------
\n" ); document.write( "Sub 3x for y in the 2nd eqn
\n" ); document.write( "3x = x-4
\n" ); document.write( "2x = -4
\n" ); document.write( "x = -2
\n" ); document.write( "--------
\n" ); document.write( "y = -6
\n" ); document.write( "
\n" ); document.write( "
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