document.write( "Question 440458: solve by either the substitution or the addition-orsubtraction method: 2m=n-3 and 3m=2n+9 \n" ); document.write( "

Algebra.Com's Answer #304376 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi
\n" );
document.write( "solving by substitution
\n" );
document.write( "2m = n-3  OR n = 2m+3
\n" );
document.write( "3m = 2n+9
\n" );
document.write( "3m = 2(2m+3) + 9
\n" );
document.write( " 3m = 4m+6+9
\n" );
document.write( " -15 = m  and n = -27   ( n = 2*-15 + 3) \n" );
document.write( "

\n" );