Các câu hỏi tương tự
tim x thuoc z
(-1)+3+(-5)+7+...+x=600
Bai 1: Tim x thuoc Z
(-1) + 3 + (-5) + 7+...+ x = 600
1 )Tim x, y thuoc Z
x + y = x.y
2) Tim x thuoc Z
(x + 1)+(x+3)+(x+5)+...+(x+99)=0(x-3)+(x-2)+(x-1)+...+10+11=11-12(x-5)+7(3-x)=530(x+2)-6(x-5)-24x=100
bai 1:tim x
a) (x+1/5)2+17/25=26/25
b)-1va 5/27-(3x-7/9)3=-24/27
bai 2:cho A=n+2/n-5 (n thuoc Z ;n khac 5).Tim x de A thuoc Z
tim x;y thuoc Z: (x-3)(2y+1)=7
Tim x;y thuoc Z biet (x+3)(y-5)=7
Tim x thuoc Z:
a. 3x + 7 chia het cho x - 1
b. |x-5| > 7
Tim x,y thuoc Z
(x-3).(2y+1)=7
(x-3)*(2y+1)=7
Tim x,y thuoc Z