|80| - |x| = |-58| + |14|
80 - |x| = 58 + 14
80 - |x| = 72
|x| = 80 - 72
|x| = 8
=> x = -8 hoặc x = 8
Mà x là số nguyên dương => x = 8
Vậy x = 8
tim cac so nguyen duong x,y thoa man 2x+3y=14
Tim x,a,b nguyen duong thoa man :x+4=3^a va 4x+7=3^b
tim cac so nguyen duong x,y,z thoa man x^2+y^3+z^4
Tim so nguyen duong x,y thoa man dang thuc
x2+xy-2=0
Tim so nguyen x thoa man : A=14-x/4-x dat GTLN
tim cac so nguyen duong x y thoa man \(\frac{x}{2}+\frac{x}{y}-\frac{3}{2}=\frac{10}{y}\)
tim so nguyen duong x,y biet: 2x+5y bang 14
so nguyen duong x thoa man x^5=x^12
so nguyen duong n thoa man (3n+14):(n+1)
