4x+19=2.(2x-3)+25
(4x+19)/(2x-3)=2+25/(2x-3)
vay (2x-3) thuoc U(25)=(1,5,25)
x=[U(25)+3]/2=(2,4,14)
ds: x=(2,4,14)
mong moi nguoi giup do
THANKS [THANK YOU]
cho minh hoi ban tinh lam sao ra so
2.[2x-3]+25
muon nhan duoc su giup do som thi phai k cho chuan "dung tieu chi"
k linh tinh khong co lan sau dong thoi cong dong cun tay chay
mau so=(2x-3)
tu so co 4x+19
tach 4x=2.2x
tach 19=-6+25
tach (-6)=2.(-3)
4x+19=2.2x+2.(-3)+25
2.2x va 2.(-3) co 2 la thua so chung dat 2 lam thua so chung
4x+19=2(2x-3)+25
----tong quat cu bien tu so sa cho mot phan giong het mau so ....---
