document.write( "Question 1189782: Help me to solve m+2n=3 \n" ); document.write( "
Algebra.Com's Answer #821264 by math_tutor2020(3838)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "In the future, please post full instructions to the problem. \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "If you want to solve for m, then,
\n" ); document.write( "m+2n = 3
\n" ); document.write( "m = 3-2n
\n" ); document.write( "I subtracted 2n from both sides to undo the +2n\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Or if you want to solve for n, then
\n" ); document.write( "m+2n = 3
\n" ); document.write( "2n = 3-m
\n" ); document.write( "n = (3-m)/2
\n" ); document.write( "We first subtract off m, then divide both sides by 2. Effectively, I'm following PEMDAS in reverse.
\n" ); document.write( " \n" ); document.write( "
\n" );