document.write( "Question 448994: 2m+n=11 m-4n=37 Solve by substitution method. what is the solution of the system? \n" ); document.write( "
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2m+n=11 m-4n=37 Solve by substitution method.
\n" ); document.write( "all you have to do
\n" ); document.write( "2m+n=11
\n" ); document.write( "subtract2m from both sdes of the equation
\n" ); document.write( "2m+n=11
\n" ); document.write( "-2m -2m
\n" ); document.write( "n=-2m+11
\n" ); document.write( "and then you plug it in the second equation
\n" ); document.write( "m-4(-2m+11)=37 and then multiply across
\n" ); document.write( "m+8m-44=37
\n" ); document.write( "combine like terms
\n" ); document.write( "9m-44=37 and add 44
\n" ); document.write( " +44 +44
\n" ); document.write( "9m/9=81/9
\n" ); document.write( "m=9 and you plug it back in to the previous equation
\n" ); document.write( "2(9)+n=11
\n" ); document.write( "18+n=11
\n" ); document.write( "and subtract 18 to both sides
\n" ); document.write( "and you are left with
\n" ); document.write( "n=-7
\n" ); document.write( "and your set of solution is (9,-7) and that is your answer:) \n" ); document.write( "
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