Tìm x,y biết :
a) ( x -2 0 . ( y + 1 ) = 6 b) ( x - 5 ) . ( 2y + 4 ) = 12
Tìm các số nguyên x,y biết:
a,|x-3|+|y+3|=0
b,|x+5|+|y-4|<hoặc= 0
c,|7-x|+|y-5|=0
d,(x-2y)^2(y-6)^2=0
Tìm x,y biết :
1,(x-3)(y-1)=7
2,xy+3x-7y=21
3,xy+3x-2y=11
4,(x+1)(y-1)=-2
5,|x|=2x-6
6,|2y-4|<2
7,x(x+2)<0
8,x(x-y)=5
9,x(x-2)<0
10,(x+2)(3-x)>0
11,(x-2y)(y-1)=5
Tìm x,y thuộc Z biết
a.(x-1).(2y-4)=0
b.(3x-2).(y-3)=6
c.(3x-4).(2y-1)=2
d.2xy-3x-2y+8=0
Tìm số nguyên x biết
a,3x+3y-2xy=7
b,xy+2x+y+11=0
c,xy+x-y=4
d,2x.(3y-2)+(3y-2)=12
e,3x+4y-xy=15
f,xy+3x-2y=11
g,xy+12=x+y
h,xy-2x-y=-6
i,xy+4x=25+5y
ii,2xy-6y+x=9
iii,xy-x+2y=3
k,2.x^2.y-x^2-2y-2=0
l,x^2.y-x+xy=6
Bài 1 ; TÌM X Y BIẾT
a , 5/7/8.y -3 .| 2/5.y - 3/1/5 | = 2/1/5
b, ( 2x^2 - 20 ) . ( 2y^4 + 1/3 ) = 0
c , 10 + 11+ 12 + 13 + ... + x = 5106
Tìm x,y biết ;
a)|x+3|+|y-2|=0
b)|-x+5|=|1-5|
c)-11-|x|=-17
d)|x-2|+|2y+4|=0
e)(x-1).(y+2)=1
tìm x, y biết
a) /x-1/=/2y+6/
b)/x+3/-/3y+12/ = 0