# Help Plz!!!

Watch
This discussion is closed.
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
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
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
16 years ago
#4
Ok...

p=3
q=5
0
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
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
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
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
16 years ago
#9
(Original post by Leekey)
*Pats gemgems89 on the back*
Hehe, *goes and hugs maths teacher*
0
16 years ago
#10
Thnx Ppl!!!
0
16 years ago
#11
(Original post by hotchick200)
Thnx Ppl!!!
*proud* You're welcome.
0
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
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

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

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

### Poll

Join the discussion

#### 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%