document.write( "Question 406311: solve by the substatution method \r
\n" ); document.write( "\n" ); document.write( "7x-8y=-35
\n" ); document.write( "7x+84=y
\n" ); document.write( "

Algebra.Com's Answer #286753 by Alan3354(69443)\"\" \"About 
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7x-8y=-35
\n" ); document.write( "7x+84=y --> 7x = y-84
\n" ); document.write( "Sub for 7x in the 1st eqn
\n" ); document.write( "y-84 - 8y = -35
\n" ); document.write( "-7y = -119
\n" ); document.write( "y = 17
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\n" ); document.write( "Sub for y and find x\r
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