MATHS homework help please!

[clueless]

hi i HATE mymaths.net i cant do anything on it EVER
please help




you dont have to do it all just a little bit would really help as im so stuck and if you wouldnt mind explaining i would be grateful
thanks !

[reeana]

I thought it was mymaths.co.uk - Last time I checked

[clueless]

oh yeh it is

i get confused with it and another website myhayes.net we use

my bad!!

[Wayne]

I hated these at school. Try this: http://www.hellam.net/algebra/simul1.html

[DJ-Ains.T]

*****, we got our login details at school and the teacher ****zed them up, and I was logged in as this really clever girl ;D
She wasnt so clever when the teacher walked over and stressed :]

[scottish]

JESUS CHRIST I JUST DONE IT ALL :@! and it MESSED UP AND CLOSED IE *** :/

erm i remember solution for 2nd one is 6 + 6

x=5 in first one and 4got second 1 ;S

[CHA!NGANG]

First one, Times everything on top by 7 and everything on bottom by 3. That will cancel the x's out and will leave 56y = -7 and -18 y = 141. Then you add the 56 and 18 (Two - = +) and that gives you 74, so 74y = (Add the -7 and 141 so its 134). Then you work out y so y = 134/74 = 1.81 re-occuring, which sounds really wrong so don't take my word on that LOL. Other way is to substitute, so you find out Y = Something by moving the other digits to the other side, and then you substitute that into the other one by replacing Y with what you get. It sounds long so I'm not sure. The ones right at the bottom, I'm too tired to explain right now lol, good luck!

[kk.]

1st 4....
check them to ake sure they are rght, i may have lied

1. x = 5 y = -2
2. p = 6 q = 4
3. When p = 4, q = 2 and when p = 5, q = 4
4. x = -2.4 and y = -5.5

[scottish]

Fine ill do it again...

PART ONE
___________________________________________

3x+8y=-1 ------- Equation 1
7x-6y=47 ------- Equation 2

(1)x3 -- 9x+24y=-3
(2)x4 -- 28x-24y=188
(28+9)x=37x -- (188+(-3))=185
37x = 185
x = 185/37
x = 5

Substitute x=5 into equation 1

3x+8y=-1
15+8y=-1
8y=-16
y = -2


So u can figure rest out

[CHA!NGANG]

Orite, He did the Y's, i did the X's. If you do that method but with Y's then you get the answer yeahh.