document.write( "Question 915005: Solve the system of equations by the substitution method.\r
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\n" ); document.write( "\n" ); document.write( "The solution is?
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Algebra.Com's Answer #555390 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
y=\"2x%2B9\"
\n" ); document.write( " y=7x+10 |Substitute for y
\n" ); document.write( "2x + 9 = 7x + 10
\n" ); document.write( "-1 = 5x
\n" ); document.write( "-1/5= x
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