This discussion is closed.
hotchick200
Badges:
#1
Report 16 years ago
#1
i'm doin me y9 SATS nd i totaly dnt get simullaious equations.
da first q iz 3p+4q=29
5p-2q=5

HELP ME PLZ!!!!!!!!!!!!!!
0
JSM
Badges: 0
Rep:
?
#2
Report 16 years ago
#2
(Original post by hotchick200)
i'm doin me y9 SATS nd i totaly dnt get simullaious equations.
da first q iz 3p+4q=29
5p-2q=5

HELP ME PLZ!!!!!!!!!!!!!!
you are also gonna fail your english exam
0
gemgems89
Badges: 15
Rep:
?
#3
Report 16 years ago
#3
(Original post by hotchick200)
i'm doin me y9 SATS nd i totaly dnt get simullaious equations.
da first q iz 3p+4q=29
5p-2q=5

HELP ME PLZ!!!!!!!!!!!!!!
Let me work it out..one min..
0
gemgems89
Badges: 15
Rep:
?
#4
Report 16 years ago
#4
Ok...

p=3
q=5
0
AT82
Badges: 0
Rep:
?
#5
Report 16 years ago
#5
(Original post by gemgems89)
Let me work it out..one min..
I am crap at maths, I can't even do this!
0
Leekey
Badges: 9
#6
Report 16 years ago
#6
Here's a bit of an walkthrough...

3p+4q=29 - (1)
5p-2q=5 - (2)

First of all you need to multiply or divide on of the equations by something to ensure that when you add or subtract them later you get rid of one of the unknowns. In this case you would multiply (2) by 2 to give you a third equation...

10p-4q=10 - (3)

Now you simply add (1) and (2) and the "q"'s will go out...

13p=39
p = 3


Now that you have found "p" you can get q by substituting back into any of the equations ( I have shown (1) but it really doesn't matter which you use)...

9+4q=29
4q=20
q=5
0
gemgems89
Badges: 15
Rep:
?
#7
Report 16 years ago
#7
(Original post by Leekey)
Here's a bit of an walkthrough...

3p+4q=29 - (1)
5p-2q=5 - (2)

First of all you need to multiply or divide on of the equations by something to ensure that when you add or subtract them later you get rid of one of one of the unknowns. In this case you would multiply (2) by 2 to give you a third equation...

10p-4q=10 - (3)

Now you simply add (1) and (2) and the "q"'s will go out...

13p=39
p = 3


Now that you have found "p" you can get q bysubstituting back into any of the equations ( I have shown (1) but it really doesn't matter which you use)...

9+4q=29
4q=20
q=5
Oh, wow! I got it right! For once in my life I can help someone with maths..well leekey..you're too late, I posted first, it's an achievement because I hate maths!
0
Leekey
Badges: 9
#8
Report 16 years ago
#8
(Original post by gemgems89)
Oh, wow! I got it right! For once in my life I can help someone with maths..well leekey..you're too late, I posted first, it's an achievement because I hate maths!
*Pats gemgems89 on the back*
0
gemgems89
Badges: 15
Rep:
?
#9
Report 16 years ago
#9
(Original post by Leekey)
*Pats gemgems89 on the back*
Hehe, *goes and hugs maths teacher*
0
hotchick200
Badges:
#10
Report 16 years ago
#10
Thnx Ppl!!!
0
gemgems89
Badges: 15
Rep:
?
#11
Report 16 years ago
#11
(Original post by hotchick200)
Thnx Ppl!!!
*proud* You're welcome.
0
thefish_uk
Badges: 14
Rep:
?
#12
Report 16 years ago
#12
(Original post by gemgems89)
Hehe, *goes and hugs maths teacher*
Aww, sweet.

That's a pretty simple simultaneous equation. For our coursework we were using ones that had 4 or 5 variables, but that was optional (you could do it a crappy way by endlessly subtracting numbers).
0
hotchick200
Badges:
#13
Report 16 years ago
#13
(Original post by thefish_uk)
Aww, sweet.

That's a pretty simple simultaneous equation. For our coursework we were using ones that had 4 or 5 variables, but that was optional (you could do it a crappy way by endlessly subtracting numbers).
god nd i thought mine were ard u must b avin a great time!! my tach tryed 2 show me ow 2 sub but i just gave up y do we av 2 do tests ny way????!!!!
0
X
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

How are you feeling ahead of starting University?

I am excited and looking forward to starting (49)
14.16%
I am excited but have some apprehension around Covid-19 measures (47)
13.58%
I am concerned I will miss out on aspects of the uni experience due to new measures (128)
36.99%
I am concerned the Covid-19 measures at uni are not strong enough (35)
10.12%
I am nervous and feel I don't have enough information (68)
19.65%
Something else (let us know in the thread!) (19)
5.49%

Watched Threads

View All