Question

Tìm x: 25-{-x+[x+(-x)]}=0

Answer 1

\(25-\left\{-x+\left[x-x\right]\right\}=0\)

\(25-\left\{-x+0\right\}=0\)

\(25+x=0\)

x=-25

Answer 2

25−{−x+[x−x]}=025−{−x+[x−x]}=0

25−{−x+0}=025−{−x+0}=0

25+x=025+x=0

x=-25

Vậy x=-25