BA777
Topic Author
Posts: 2048
Joined: Fri Jun 29, 2001 11:40 pm

### Need Math Equations Help!

Guys,

I have been given some equations to do, to work out the value of x, and im confused as to how to do the following two, any help greatly appreciated!

1) 3x divided by 2 + 5 = 8

2) 14x - 2 = 2x + 22

For Thursday!

BA777

777236ER
Posts: 12213
Joined: Sat Aug 18, 2001 7:10 am

### RE: Need Math Equations Help!

1) 3x/2 + 5 = 8.

(x by 2) therefore 3x +10 = 16

Therefore 3x = 16-10

Therefore 3x = 6

x = 2.

2) 14x - 2 = 2x + 22

Therefore 14x - 2x = 22 + 2

Therefore 12x = 24

Therefore x = 2.
Your bone's got a little machine

777236ER
Posts: 12213
Joined: Sat Aug 18, 2001 7:10 am

### RE: Need Math Equations Help!

Wait till you get onto second order differential equations!
Your bone's got a little machine

KROC
Posts: 18919
Joined: Mon May 08, 2000 11:19 am

### RE: Need Math Equations Help!

777236ER. Where were you and this site when I had Math homework to do? I could never sucker other people into doing it for me!

docpepz
Posts: 1706
Joined: Thu May 24, 2001 8:20 pm

### RE: Need Math Equations Help!

777236ER:

No, wait till he gets to 2nd order PARTIAL non homogenoeus differential equations. Takes at least 6 pages to solve after testing the various boundary conditions and using Fourier series. blah.

Turbolet
Posts: 1867
Joined: Fri Nov 23, 2007 10:23 pm

### RE: Need Math Equations Help!

Let's put it simply, just wait till you go through 'Pure Mathematics: The Core Course for A Level'. Believe me, sometimes I have a very violent desire to tear up the bloody book! Eight months to go and then I can finally do that...
-turbolet

777236ER
Posts: 12213
Joined: Sat Aug 18, 2001 7:10 am

### RE: Need Math Equations Help!

Fourier series suck monkey ass. Find any books by D. Griffiths -- they're pure evil.

My reasoning is, dude is wily enough to ask people on an aviation website for help, he deserves top marks.
Your bone's got a little machine

flight152
Posts: 3324
Joined: Fri Nov 24, 2000 8:04 am

### RE: Need Math Equations Help!

You guys are doing it all wrong.

That formula has a HUGE flaw in it. Cramer's Law doesn't apply because to this the determinates aren't exponential to y-power (or the 45X/5F Power) unless you have the cotangent (1/tangent) sub(5/3x) equaling the curve-root of the 8/3 variable (7x cubed squared). Of course you have to first square the transponent of the acquired absolute sum of both variables, then the base integer's cotangible and triceptive coordinate (in this case 8). Try using Humplestein's Law of Compression instead, DUH! Hope that helps, makes it a bit easier.

707CMF
Posts: 4698
Joined: Thu Mar 14, 2002 5:39 pm

### RE: Need Math Equations Help!

Fourier series suck monkey ass.

Well, 777, that's just the reason why I am a computer engineer now, and not a Signal processing engineer.
Fourier indeed sucks. How could a French guy be so mean ?

Barcode
Posts: 666
Joined: Sat Dec 08, 2001 10:20 am

### RE: Need Math Equations Help!

*joins the anti A Level Maths crowd. I just got back from my three hour evening class and all the equations are a blur .... a perfect cube ... factorising ... laws of indices ... blah ...

Anyway, 14x - 2 = 2x + 22 is straightforward as someone pointed out. Just remember what you do to one side you should also do to the other ....

14x - 2 = 2x +22 - Add the (-2) to 22 so you get 24, and take away the 2x from the 14x to get 12x (try to get the variables on one side and the numbers on the other). So then you're left with 12x = 24, x = 24/12, x = 2.

### Who is online

Users browsing this forum: Calder, jetero, mdsh00, stratosphere and 7 guests

### Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos