- x - 8 - 9=17
=> - x=17+8+9
=> - x=34
=> x= -34
-x-8-9=17
=>-x=17+8+9
-x=-34
Vậy x=-34
(x+1).(xy-2)=11
xy-7x+y=-22
xy-3x+y=-20
xy-5y-2x=-41
lam ca cach trinh bay giup mk nhe
mk se tich dung cho
Chung minh : 19^93 -19^39 chia het cho 18
giup minh nhe ,neu lam bai thi co ca trinh bay nua nhe, can on cac ban
Tim x biet:
(2x-1)5=(2x-1)7
Trinh bay cach lam nua nhe
Tim x biet:
(2x-1)5=(2x-1)7
Trinh bay cach lam nua nhe
Tim x,biet:
(13.3x-2-3x):2=162 (Voi x ≥2)
Trinh bay cach lam ho minh voi nhe
Tim cac so nguyen to x ,y biet:
x2+117=y2
Help me va trinh bay cach lam nhe
Tim cac so nguyen x , y , z biet:
|x.y-10|+|y.z+15|+|zx+6|≤0
Trinh bay cach lam ho minh voi nhe
Cho A =n-2 / n+5
a,Tinh gia tri cua B=(n+5)2016+2015 khi A dat gia tri nho nhat
cac ban trinh bay cach lam ho minh nhe
thanks
Cho A =n-2 / n+5
a,Tinh gia tri cua B=(n+5)2016+2015 khi A dat gia tri nho nhat
cac ban trinh bay cach lam ho minh nhe
thanks