Question Number 5051 by nhoduy last updated on 05/Apr/16
$$\mathrm{7}{x}−\mathrm{4}=\mathrm{0} \\ $$
Commented by nguyentai last updated on 05/Apr/16
$$\Leftrightarrow{x}=\mathrm{1} \\ $$
Answered by FilupSmith last updated on 06/Apr/16
$$\mathrm{7}{x}−\mathrm{4}=\mathrm{0} \\ $$$$\mathrm{7}{x}=\mathrm{4} \\ $$$$\therefore\:{x}\:=\:\frac{\mathrm{4}}{\mathrm{7}} \\ $$