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Solving Linear Equations

Linear Equations
by

Scott McDaniel

on 17 May 2010

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Transcript of Solving Linear Equations

Double click anywhere & add an idea What is a linear Equation? Let's look at some examples 3x - 2 = 4
2x - 5 = 8x + 2
(2/3)x + 4/5 = 4
5.2x-2.6=3.9x OK, what are some counter examles Slightly more technical definition Any Equation that can be written in the form: ax + b = c, where a, b, & c are real numbers. Example Solve 3x = 6 Summary
Step 1. What is beside the x that we don't want?
Answer: a 3.
Step 2. How is the 3 "connected" to the x?
Answer: it is being multiplied
Step 3. How do we "undo" multiplication?
Answer: Division
Step 4. Divide both sides by 3.

This gives us 3x = 6
----- ---
3 3
x = 2 Step 1. What is beside the x that we don't want? 3x = 6 Answer: a 3 Step 2. How is the 3 "connected" to the x? 3x = 6 Answer: It is being multiplied Step 3. How do we "undo" multiplication? 3x = 6 Answer: Division Step 4. Divide both sides by 3 3x = 6 This gives us:

3x = 6
--- ---
3 3

x = 2
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