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)![]() ![]() ![]() 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( " \n" ); document.write( " |