document.write( "Question 376292: Solve using the substitution method:
\n" ); document.write( "r=-3s
\n" ); document.write( "r+4s=10
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #267673 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"r=-3s\"$
\n" ); document.write( "2. $\"r%2B4s=10\"$
\n" ); document.write( "Substitute eq. 1 into eq. 2 directly,
\n" ); document.write( " $\"-3s%2B4s=10\"$
\n" ); document.write( " $\"highlight%28s=10%29\"$
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( " $\"r=-3%2810%29\"$
\n" ); document.write( " $\"highlight%28r=-30%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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