document.write( "Question 170660This question is from textbook Introductory Algebra
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document.write( ": Solve using the elimination method.\r
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document.write( "2x - y = 6
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document.write( "5x + y = 22 \n" );
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Algebra.Com's Answer #125989 by Mathtut(3670)![]() ![]() ![]() You can put this solution on YOUR website! 2x-y=6....eq 1 \n" ); document.write( "5x+y=22...eq 2 \n" ); document.write( ": \n" ); document.write( "this problem is already set up nicely without having to multiply either equation by anything. Just add eq1 to eq 2 and the y terms will be eliminated. \n" ); document.write( ": \n" ); document.write( "we are left with \n" ); document.write( "the x terms 2x+5x and the constants 6+22 \n" ); document.write( ": \n" ); document.write( "2x+5x=6+22 \n" ); document.write( ": \n" ); document.write( "7x=28 \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "now substitute x's value back into either equation....I will use eq 2 \n" ); document.write( ": \n" ); document.write( "5(4)+y=22---->20+y=22--->subtraction 20 frome each side produces \n" ); document.write( " |