Question Number 91470 by Zainal Arifin last updated on 01/May/20
$$\mid\mathrm{x}−\mathrm{3}\mid<\mathrm{0}.\mathrm{1} \\ $$
Commented by john santu last updated on 01/May/20
$$−\mathrm{0}.\mathrm{1}<{x}−\mathrm{3}<\mathrm{0}.\mathrm{1} \\ $$$$\Leftrightarrow\mathrm{2}.\mathrm{9}<{x}<\mathrm{3}.\mathrm{1} \\ $$
Commented by Zainal Arifin last updated on 01/May/20
$$\mathrm{thank}\:\mathrm{you}\:\mathrm{sir}\:.\:\mathrm{you}\:\mathrm{are}\:\mathrm{right} \\ $$