I have an algebra question that seems easy at first glance but is giving me a headache. Any help?
8 l 3x-2 l = 0
the ” l ” stands for absolute value.
Thanks!
Favorite Answer
|3x-2| = 0 — ignore absolute value for a sec, add 2
3x = 2 — divide by 3
x = 2/3
now plug that into the original equation with a plus and a minus:
8 l 3x-2 l = 0
8 | 2-2 | = 0
8 | 0| = 0 (positive 2/3 works)
8 | -2 – 2 | = 0
8 |-4| = 0
32 = 0 (negative 2/3 doesn’t work)
so your only answer is 2/3
divide both sides by 8
8/8 l 3x-2 l = 0/8
l 3x-2 l = 0
you don’t need to worry about the absolute value zero is neither a positive or negative number so 3x-2 = 0.
Add 2 to each side
3x-2+2 = 0+2
3x = 2
divide both sides by 3
3x/3 = 2/3
x = 2/3
If you go back to the original problem and plug in 2/3 for x, you will find this is the correct answer.
- Academic Writing
- Accounting
- Anthropology
- Article
- Blog
- Business
- Career
- Case Study
- Critical Thinking
- Culture
- Dissertation
- Education
- Education Questions
- Essay Tips
- Essay Writing
- Finance
- Free Essay Samples
- Free Essay Templates
- Free Essay Topics
- Health
- History
- Human Resources
- Law
- Literature
- Management
- Marketing
- Nursing
- other
- Politics
- Problem Solving
- Psychology
- Report
- Research Paper
- Review Writing
- Social Issues
- Speech Writing
- Term Paper
- Thesis Writing
- Writing Styles