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Question 140873: 2x+3=8
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! Solving equations is basically "undoing" what was done to the x. In this case, you need to "undo" additon of +3 by subtracting 3 from each side.
2x+3=8
2x+3-3 = 8-3
2x= 5
Next, to "undo" multiplication by 2, divide both sides by 2.
x=5/2 or 2.5
For a detailed explanation of this see my website by clicking on my tutor name "rapaljer" anywhere in algebra.com. Take the first link which is "Basic, Intermediate, or College Algebra: One Step at a Time." Click on "Basic Algebra", then "Chapter 1", and look for Section 1.08 Basic Equation Solving. MY explanations here are for students who don't understand the traditional textbooks.
R^2
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