Thread: solve equation
View Single Post
  #3  
Old May 21st, 2008, 03:51 PM
topsquark's Avatar
topsquark topsquark is offline
Generous Contributor
  
Join Date: Jan 2006
Location: Angelica, NY
Posts: 7,618
Country:
Thanks: 643
Thanked 2,312 Times in 2,098 Posts
topsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond reputetopsquark has a reputation beyond repute
Default
Quote:
Originally Posted by nasb View Post
2-Solve:

a: 8x-7=5(x+4)
b: 8-2x=5
c: 3x-5=7
d: 7(3-p)=9-4p
These are all of the same type.
8x - 7 =5(x + 4)

8x - 7 = 5 \cdot x + 5 \cdot 4

8x - 7 = 5x + 20

8x - 7 - 5x = 5x + 20 - 5x

3x - 7 = 20

3x - 7 + 7 = 20 + 7

3x = 27

\frac{3x}{3} = \frac{27}{3}

x = 9

The other three use the same basic pattern of solution. Try them again, step by step, using the above solution as a model. If you are still stuck on any of them, just let us know.

-Dan
__________________
Got a Physics question? Come on over to
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


"I must not fear. Fear is the mind killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain." - The Litany Against Fear, "Dune" by Frank Herbert
Reply With Quote