document.write( "Question 715527: I need to use subsitution to solve each system of equations\r
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Algebra.Com's Answer #439468 by Alan3354(69443)\"\" \"About 
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I need to use subsitution to solve each system of equations\r
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\n" ); document.write( "You have 1 equation.
\n" ); document.write( "Nothing to substitute.
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