Discussion:  All Topics in Algebra 
Topic:  Is "variable" confusing to students? 
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Subject:  RE: Is 'variable' confusing to students? 
Author:  knewtown 
Date:  May 8 2009 
the idea that only one value of this variable will make the statement true.
For instance
11 = 3x + 4
It is quite fine to substitute 9 in for the variable x, resulting in the
equation
11 = 3*9 + 4 as long as you write underneath that this statement is NOT TRUE.
Or use the slash through the equal sign to denote not equal.
 
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