document.write( "Question 196903: x+y=5; let x=4 \n" ); document.write( "
Algebra.Com's Answer #147610 by Mathtut(3670)\"\" \"About 
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so substitute x=4 into x+y=5
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\n" ); document.write( "4+y=5
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\n" ); document.write( "so y=1
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