tim so nguyen a biet
|a-15|=0
b] |a+7|=2
bai 2
tim x biet rang tong cua 4 so
x;(-5),7 va (-15)=1
Tim cac so nguyen x,y thoa man:
\(\left|x-7\right|+\left|3-x\right|=\frac{12}{\left|y+1\right|+3}\)
tim x;y nguyen thoa man
3x+7=y(x-3
so cap so nguyen x,y thoar man dieu kien \(\frac{3}{x}+\frac{y}{3}=\frac{5}{6}\)
tim so nguyen x thoa man:\(\frac{-1}{8}\) < \(\frac{x}{8}\)<\(\frac{1}{4}\)
tim x, y nguyen thaoa man 1/x +1/y=1/8
tim n thuoc N sao cho A=n/n^2-n+1 la so nguyen
tim 2 so co tich bang 8010 biet rang neu giu nguyen thua so thu nhat va tang thua so thu 2 8 don vi thi duoc tich moi la 9434
1/2.x+3/5.(x-2)=3
Tim x