document.write( "Question 412171: solve by the substitution method 4x-9y-31, 6x+41=y\r
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Algebra.Com's Answer #289560 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "No equals sign in 4x - 9y - 31. Can't solve a system of equations with only one equation.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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\"The

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