document.write( "Question 714561: How do you solve this using substitution?
\n" ); document.write( "y = 2x + 9
\n" ); document.write( "y = x + 6
\n" ); document.write( "

Algebra.Com's Answer #438874 by Dionysus10474(5)\"\" \"About 
You can put this solution on YOUR website!
Because y is equal to y you get:
\n" ); document.write( "2x + 9 = x + 6
\n" ); document.write( "take x to the left
\n" ); document.write( "x + 9 = 6
\n" ); document.write( "take the 9 to the right
\n" ); document.write( "x = 6 - 9
\n" ); document.write( "and voila
\n" ); document.write( "x = -3
\n" ); document.write( "
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