document.write( "Question 809200: How do I go about solving: this substitution problem: { y=2x +9}
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Algebra.Com's Answer #487513 by Alan3354(69443)\"\" \"About 
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How do I go about solving: this substitution problem: { y=2x +9}
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\n" ); document.write( "since both right sides equal y, they equal each other.
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