# Very confused. Please help!?

Pick A if the quantity in column A is greater

Pick B if the quantity in column B is greater

Pick C if the two quantities are always equal

Pick D if the relationship cannot be determined from the information given

Answer the following question using A,B,C or D as described above

Column A

the value of x in the equation x – 5=3x +7

Column B

the value of n in the equation 4n – 3=2(2n+2) – 7

Can you explain this also. Thanks alot.

Favorite Answer

x-5=3x+7 4n-3=2(2n+2)-7

x-3x=7+5 4n-3=4n+4-7

-2x=12 4n-4n=3+4-7

x=-6 0n=0

-6<0, therefore, Column B is greater Personally I don't care much for this problem, as 0 can be misinterpreted as undefined, if manipulated improperly, but that's the best answer I can offer....

-5=2x+7 ————-> subtract x from both sides

-12=2x ————–> subtract 7 from both sides

-6 = x —————-> divide 2 from each side

4n – 3=2(2n+2) – 7

4n – 3 = 4n +4 – 7 ————-> distribute

4n – 3 = 4n – 3 —————–> combine like terms

-3 = -3 ——————————> subtract 4n from each side

0 = 0 ————————–> add 3 to each side

its D because we dont know what the value of n is since the equation balances out. we know that x = -6 but we dont know what n is. in this equation n could be anything.

You have to isolate the variable by solving the equation.

- 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