document.write( "Question 394304: how do you solve
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document.write( "y=3x
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document.write( "y=x-4
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document.write( "using substitution \n" );
document.write( "
Algebra.Com's Answer #279891 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 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( " |