document.write( "Question 170660This question is from textbook Introductory Algebra
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\n" ); document.write( "\n" ); document.write( "2x - y = 6
\n" ); document.write( "5x + y = 22
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2x-y=6....eq 1
\n" ); document.write( "5x+y=22...eq 2
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\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.
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\n" ); document.write( "we are left with
\n" ); document.write( "the x terms 2x+5x and the constants 6+22
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\n" ); document.write( "2x+5x=6+22
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\n" ); document.write( "7x=28
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\n" ); document.write( "now substitute x's value back into either equation....I will use eq 2
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\n" ); document.write( "5(4)+y=22---->20+y=22--->subtraction 20 frome each side produces
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