It is currently Fri Jul 28, 2017 1:04 pm

 All times are UTC

 Page 1 of 1 [ 6 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: HOW TO SOLVEPosted: Sun Dec 24, 2006 9:08 pm

Joined: Sun Dec 17, 2006 10:40 am
Posts: 36
6x -7 =3x +5 whats the value of x
i need a method not just guessing numbers.

Top

 Post subject: Posted: Sun Dec 24, 2006 9:14 pm
To solve most teachers recommend the following:

First collect all x terms on the side where you have the most

6x -7 =3x +5
6x -7 -3x = 3x + 5 -3x [subtracting 3x from both sides]

so,
3x - 7 = 5

now collect the numbers

3x -7 +7 = 5 + 7 [adding 7 to both sides]
3x = 12
x = 4
Now check in original if you have time

Top

 Post subject: huhPosted: Sun Dec 24, 2006 9:24 pm

Joined: Sun Dec 17, 2006 10:40 am
Posts: 36
in simpiler words

Top

 Post subject: Posted: Sun Dec 24, 2006 9:34 pm
Can you do the ones with x terms on one side without guessing?

Eg 7x - 5 = 16

collect numbers

7x - 5 + 5 = 16 + 5 [ we need to add 5 to both sides to undo the '-5']

so 7x = 21

then x = 3

If you can I will try and explain another one

Top

 Post subject: Posted: Mon Dec 25, 2006 2:00 am

Joined: Tue Nov 14, 2006 5:04 pm
Posts: 89
hi,

This bbc site may be useful. I have used it my daughter. She found it helpful. Key stage 3 mathu, under algebra.

http://www.bbc.co.uk/schools/ks3bitesiz ... ndex.shtml

Top

 Post subject: Posted: Mon Dec 25, 2006 9:25 am

Joined: Sun Dec 17, 2006 10:40 am
Posts: 36
thanx alot

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 6 posts ]

 All times are UTC

#### Who is online

Users browsing this forum: Google Feedfetcher and 2 guests

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

Search for:
 Jump to:  Select a forum ------------------ FORUM RULES    Forum Rules and FAQs 11 PLUS SUBJECTS    VERBAL REASONING    MATHS    ENGLISH    NON-VERBAL REASONING    CEM 11 Plus GENERAL    GENERAL 11 PLUS TOPICS    11 PLUS APPEALS    11 PLUS TUTORS    INDEPENDENT SCHOOLS    11 PLUS CDs/SOFTWARE    11 PLUS TIPS    PRIMARY    SEN and the 11 PLUS    EVERYTHING ELSE .... 11 PLUS REGIONS    Berkshire    Bexley and Bromley    Birmingham, Walsall, Wolverhampton and Wrekin    Buckinghamshire    Devon    Dorset    Essex    Essex - Redbridge    Gloucestershire    Hertfordshire (South West)    Hertfordshire (Other and North London)    Kent    Lancashire & Cumbria    Lincolnshire    Medway    Northern Ireland    Surrey (Sutton, Kingston and Wandsworth)    Trafford    Warwickshire    Wiltshire    Wirral    Yorkshire BEYOND 11 PLUS    Beyond 11 Plus - General    GCSEs    6th Form    University