document.write( "Question 1026079: How do you solve for substitution equations?\r
\n" ); document.write( "\n" ); document.write( "-4x + y = 6
\n" ); document.write( "-5x - y = 21
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Algebra.Com's Answer #641349 by MathTherapy(10557)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "How do you solve for substitution equations?\r
\n" ); document.write( "\n" ); document.write( "-4x + y = 6
\n" ); document.write( "-5x - y = 21
\n" ); document.write( "
Do you really want to solve by substitution? The equations can be solved by ELIMINATING the y variable instantly, 
\n" ); document.write( "without having to change any of the 2. \n" ); document.write( "
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