document.write( "Question 110749: Solve the system by the substitution method.\r
\n" ); document.write( "\n" ); document.write( "x - 5y = 13
\n" ); document.write( "-2x - 2y = -2\r
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Algebra.Com's Answer #80717 by scott8148(6628)\"\" \"About 
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from the first equation, x=5y+13\r
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\n" ); document.write( "\n" ); document.write( "substituting into second equation gives -2(5y+13)-2y=-2\r
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\n" ); document.write( "\n" ); document.write( "-10y-26-2y=-2 ... -24=12y
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