document.write( "Question 263367: how do i use the the substitution method for 9m+n=24 m-3n=12
\n" ); document.write( "to find the ordered pairs. \n" ); document.write( "

Algebra.Com's Answer #195929 by JBarnum(2146) $\"\"$ $\"About$

You can put this solution on YOUR website!
fist find for one variable
\n" ); document.write( " $\"9m%2Bn=24\"$ __ $\"n=24-9m\"$
\n" ); document.write( " $\"m-3n=12\"$
\n" ); document.write( "pick one equation and plug it in the other
\n" ); document.write( "so: $\"n=24-9m\"$
\n" ); document.write( " $\"m-3%2824-9m%29=12\"$
\n" ); document.write( " $\"m-72%2B27m=12\"$
\n" ); document.write( " $\"-72%2B28m=12\"$
\n" ); document.write( " $\"-72%2B28m%2B72=12%2B72\"$
\n" ); document.write( " $\"28m=84\"$
\n" ); document.write( " $\"m=84%2F28\"$
\n" ); document.write( " $\"m=3\"$
\n" ); document.write( "_________________
\n" ); document.write( " $\"m-3n=12\"$
\n" ); document.write( " $\"3-3n=12\"$
\n" ); document.write( " $\"3-3n-3=12-3\"$
\n" ); document.write( " $\"%28-3n%29%2F-3=9%2F-3\"$
\n" ); document.write( " $\"%28cross%28-3%29n%29%2Fcross%28-3%29=9%2F-3\"$
\n" ); document.write( " $\"n=-3\"$ \r
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