document.write( "Question 755791: Solve each system by substitution\r
\n" ); document.write( "\n" ); document.write( "7x-4y=9
\n" ); document.write( "-3x+5y=-17
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Algebra.Com's Answer #464353 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
from 7x-4y=9 we get
\n" ); document.write( "\"%0D%0Ax=%284y%2B9%29%2F7%0D%0A\"\r
\n" ); document.write( "\n" ); document.write( "\"%0D%0A-3%284y%2B9%29%2F7%2B5y=-17%0D%0A\"\r
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\n" ); document.write( "\n" ); document.write( "m7:\r
\n" ); document.write( "\n" ); document.write( "\"%0D%0A-3%284y%2B9%29%2B35y=-119%0D%0A\"\r
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\n" ); document.write( "\n" ); document.write( "y=(-119+27)/(35-12)=-4\r
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\n" ); document.write( "\n" ); document.write( "so that means\r
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\n" ); document.write( "\n" ); document.write( "\"%0D%0Ax=%284y%2B9%29%2F7=%284%28-4%29%2B9%29%2F7=-1%0D%0A\"\r
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\n" ); document.write( "\n" ); document.write( ":)
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