Quantcast math - XP Math - Forums
XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Mathematics > Homework Help

Reply
 
Thread Tools Display Modes
Old 01-15-2008   #1
christopher starrett
Guest
 
Posts: n/a
Default math

2x+5/5=3x+1/2+-x+7/2
  Reply With Quote
Old 01-21-2008   #2
favtbg
Guest
 
Posts: n/a
Default

2x+5/5=3x+1/2+-x+7/2

is this how it should look? because i can only figure from what you typed
(2x+5)/5 = (3x+1)/2 + (-x+7)/2
if it does then combine the right side together since both expressions have common denominator of 2. then you should have

(2x+5)/5 = (3x+1+-x+7)/2
(2x+5)/5 = (2x+8)/2

Now you can cross multiply because you have a fraction equal to a fraction

(2x+5) *times* 2 = (2x+8) *times* 5
4x+10 = 10x+40

now bring all variable (x) to one side and constant to the other. I want to bring 4x to the right and 40 to the left. I would have:

4x + 10 = 10x + 40
-4x -40 =-4x -40
-30 = 6x

divide 6 to both sides

-30=6x
6 = 6

you should get:
x=-5

Check your work by plug -5 back into the original equation to see if it is correct.

Hope that helps
  Reply With Quote
Old 01-23-2008   #3
galal95
Guest
 
Posts: n/a
Default go me

good explation fav dog u are really good in math why dont you challenge me
  Reply With Quote
Old 01-29-2008   #4
favtbg
Guest
 
Posts: n/a
Default

challenge you at what? I am new here so tell me what's going on.
  Reply With Quote
Old 01-29-2008   #5
galal95
Guest
 
Posts: n/a
Thumbs up

you go to my pro file then you go to my last post and then you click on my last post i did then on the bottom its going to say challenge galal95





thats it
  Reply With Quote
Old 05-13-2008   #6
theredsky
Guest
 
Posts: n/a
Default

It's pretty much the same as the first reponse's:
(2x+5)/5 = (3x + 1)/2 + (-x + 7)/2
=4x+10 = 15x+5-5x+35 (by multiplying both sides by 10)
= 4x + 10 = 10x + 40 (simplification)
=-6x = 30
x=-5


DONE!!!
  Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:38 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2017, vBulletin Solutions Inc.
XP Math