# Math

posted by .

I need to find the value of x.

5(x-4) = 3(x+8)

Trying to help my niece and haven't done this stuff for 20 years. :)

5(x-4) = 3(x+8)
5x - 20 = 3x + 24
5x - 3x = 20 + 24
2x = 44
x = 22

I hope this brings back the algebra you studied 20 years ago. :-)

By the way -- to check myself (I took algebra many, many years ago), I substituted 22 for x in the original problem.

We knew the answer was 22, but not sure how to get there. Thanks for your help! We really appreciate it. Will use the service again in the future. :)

## Similar Questions

1. ### math stuff

Do the exact calculation: 7182 x 2123= ________ Approximate to the nearest hundred _____x_____=__________ Difference between exacct and approximate value=_______ Can you help me with another problem too?
2. ### math

what formulas do i use for this: Investments Suppose \$10,000 is invested at an annual rate of 5% for 10 years. Find the future value if interest is compounded as follows. A) Annually B) Quarterly C) Monthly D)Daily (365 days) In each …
3. ### History

I am trying to find out what the QANTAS Founders Outback museum in Longreach offers/ showcases but I haven't had any luck and I'm running out of time so I need help!!!!
4. ### Economics

Im trying to figure out my grade what would i need to get a c average in the class;39%,of my grade is is based on 3 assignments(i got so far 62%,80%,haven't done the last assignment yet), 3 exams each worth 20%( i got a 2%,40%, haven't …
5. ### math

jim is 45 years old. He is 10 years older than 5 times his niece. How old is carol?
6. ### Math

All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: 1. List the ages of two people in your life, one older than you and one younger than you. It would be best if …
7. ### algebra

if mary's age is x years.what will be the present age of mary's niece if her niece is 3 years less than one third of mary's age 5 years ago?
8. ### Help

Im trying to study but I need to know what (adverb phrases) are?
9. ### english

which sentence is the best revision? a. My niece is a ballet dancer. b. My niece is a ballet dancer who performs both solo ballets and as a member of the ballet corps. c. My niece is a ballet dancer and I always enjoy attending performances.
10. ### Math

Jacob is 4p years old. His niece is 5years younger than 1/3 of his age. How old his his niece in terms of p.

More Similar Questions