Bai` TOa'n Kho' Qua' !!!!!

[ShyGirl]

Ca'i na`y me. Shy mo*'i no'i vo*'i Shy to^'i qua ma` que^n ro^`i, ddo*.i chie^`u ve^` ho?i me., hihihih :D :D :D j/k ;) ;) ;)

[ShyGirl]

Thank you Cha` Ba' nhie^`u, hihihihi ;) ;) ;) Smart qua' ddi :D

[LangTu_LuuLinh]

Hehehe, don_d ....
Ba`i toa'n na`y chi? co' 2 p. tri`nh tho^i nhu*ng ma` 3 a^?n so^' ...... dza^.y mo*'i la` ddo^' chu*' :)

X+Y+Z = 100
5X+3Y+1/3Z = 100

Sau khi gia?m ddi mo^.t a^?n so^' ro^`i .... thi` la.i du`ng ca'ch cu?a ChaBa ... the^m, the^m, bo*'t, bo*'t ... la` ra thui .... :)

[LangTu_LuuLinh]

don_d,
Cha`Ba' gio?i ddoa' n thi` khg no'i ....

Co`n ne^'u muo^'n ti'nh toa'n du`ng phu*o*ng tri`nh ... thi` pha?i la`m nhu* va^`y:

5X+3Y+1/3Z = 100 ( mult. by 3 and subtract the bottom equation)
X+Y+Z = 100
------------------

You'll get this:
14X + 8Y = 200
or
7X + 4Y = 100

With 7 and 4, you can guess that X and Y is close to 10,
so when I say: "the^m the^m, bo*'t bo*'t" ... this is what I mean .... you take 1 from X
and add 1 to Y .... you will quickly find that when X is 8 and Y is 11 makes it an even 100.
Then put your answer back to the orginal equation X+Y+Z=100 .... got it?
:)

[Tammy Nguyen]

hehe i am not too good at math :(
a disapointment to the vietnamese :(

Be proud, you are not the only one!!:D :p

[LangTu_LuuLinh]

Who says Vietnamesessss are good at math? .... nope, disagree ..... I used to know a lot of VNese in school ... (I used to be VNese Students Assoc. Pres. awhile back :) .... ) And no, they're not that good ... only a certain percentage .... just because Mama wanted them to be an engineer doesn't mean they automaticly good at math :) ... cheer up ;)