I have seen the teacher solving this equation, but I cannot understand the solution. Would someone please explain a solution to this equation?
$$|x|+x=0$$
Solution:
$$x+(-x)=0$$
$$0=0. $$
I have seen the teacher solving this equation, but I cannot understand the solution. Would someone please explain a solution to this equation?
$$|x|+x=0$$
Solution:
$$x+(-x)=0$$
$$0=0. $$