MandysNotes

Introduction to Algebra: Variables & Constants

20 March 2010 By In Basics & Number Properties
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Algebra Basics, Parts of an Equation, Mandy's Notes

All equations have various parts.  The variable represents the unknown.  We can tell what "x" represents in this particular equation, almost by guessing.  WHAT + 23 = 45?  

The VARIABLE here is "x"

The CONTANT is 23, because it is "constantly" there, and we have already identified its value as 23.  

Mathematically, we can obtain what "WHAT" equals, by subtracting 23 from 45.  

45 - 23 = 22

Therefore, x = 22 

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