document.write( "Question 370279: solve by substitution:
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document.write( "1: x-y=-8
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document.write( "y=3x\r
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document.write( "2: 2x+y=1
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document.write( "x=8-3y\r
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document.write( "Solve:
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document.write( "3:x+y=20
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document.write( "-2x+y=5\r
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document.write( "4:3x+y=8
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document.write( "x-y=12 \n" );
document.write( "
Algebra.Com's Answer #264019 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Duplicate \n" ); document.write( " |