Himpunan penyelesaian pada pertidaksamaan 5x−4≤x+45x-4\le x+45x−4≤x+4 jika semestanya himpunan bilangan asli adalah ....
HP {. . . , 0, 1, 2}\left\{.\ .\ .\ ,\ 0,\ 1,\ 2\right\}{. . . , 0, 1, 2}
HP ={1, 2, 3, . . .}=\left\{1,\ 2,\ 3,\ .\ .\ .\right\}={1, 2, 3, . . .}
HP ={0, 1, 2}=\left\{0,\ 1,\ 2\right\}={0, 1, 2}
HP ={1, 2}=\left\{1,\ 2\right\}={1, 2}
HP ={1}=\left\{1\right\}={1}