document.write( "Question 201999This question is from textbook Algebra Structure and Method
\n" ); document.write( ": Solve be either the subsistution or the addition-or-subtraction method.
\n" ); document.write( "2m = n - 3
\n" ); document.write( "3m = 2n - 9
\n" ); document.write( "Am I suppose to change the equation to
\n" ); document.write( "n - 3 = 2m
\n" ); document.write( "3n - 9 = 3m \r
\n" ); document.write( "\n" ); document.write( "Or change it to an additon problem? I'm really stuck
\n" ); document.write( "

Algebra.Com's Answer #152243 by rfer(16322)\"\" \"About 
You can put this solution on YOUR website!
2m=n-3
\n" ); document.write( "3m=2n-9
\n" ); document.write( "change one equation to terms of n=
\n" ); document.write( "2m=n-3
\n" ); document.write( "n=2m+3
\n" ); document.write( "substitute this for n in the other equation
\n" ); document.write( "3m=2(2m+3)-9
\n" ); document.write( "3m=4m+6-9
\n" ); document.write( "-m=-3 multiply through by -
\n" ); document.write( "m=3
\n" ); document.write( "-------------------------------
\n" ); document.write( "2(3)=n-3
\n" ); document.write( "6=n-3
\n" ); document.write( "9=n
\n" ); document.write( "
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