Question Number 104278 by Anindita last updated on 20/Jul/20
$${x}−\left(−\left(−{x}+\left(−{x}+{x}\right)\right)\right)=\:? \\ $$
Answered by bramlex last updated on 20/Jul/20
$${x}−\left(−\left(−{x}+\mathrm{0}\right)\right)={x}−\left(−\left(−{x}\right)\right) \\ $$$$={x}−\left({x}\right)=\mathrm{0} \\ $$