Question

[than the anh]

(x-1) /2 = (y-2) /3 = (z-3) /4 và x-2y+3z = -10

tìm x; y; z

Answer 1

[Dich Duong Thien Ty]

ap dung tinh chat day ti so bang nhau ta co : 

x-1/2=y-2/3=z-3/4=(x-1)-2.(y-2)+3.(z-3)/2-2.3+3.4

=x-1-2y+4+3z-9/2-6+12 = (x-2y+3z)+(-1+4-9)/8

= 14-6/8 

=1

Suy ra :

x-1/2=1=>x-1=2=>x=3

y-2/3=1=>y-2=3=>y=5

z-3/4=1=>z-3=4=>z=7 

nho lik e nhe thanks