Các câu hỏi tương tự
tim x, y, z thuoc Z sao cho /x-y/+/y-z/+/x-z/=2019
tim x, y, z thuoc Z sao cho /x-y/+/y-z/+/z-x/=2019
tim x,y,z thuoc N sao cho 1/x+1/y+1/z=1/2
tim x,y thuoc z sao cho (x-7).(y+3)<0
tim x,y thuoc z sao cho
a) xy= x+y
b) xy = x-y
tim x,y,z thuoc Z sao cho 1:x+y+1:y=1:8
1. tim cac cap so nguyen duong (x, y) sao cho:
2 x3 + xy = 11
2. tim cac cap so nguyen duong (x, y, z)sao cho:
x + y + z = x*y*z
3. tim x thuoc z, biet;
|x| = -2003
|x| = |-2003|
minh dang can gap lam. chieu mai phai nop rui
3) Tim n thuoc Z sao cho :
a)3n+1chia het cho (n-2)
b)4n-3 chia het cho (2n+3)
4)tim x,y thuoc Z sao cho :
a)xy-3x-y-6=7
b)2xy+10y + x =5
ai nhanh minh tick cho
tim x,y thuoc z sao cho:
7x-xy+2y=18