Question

17- {-x [-x-(-x)]}=-16

Answer 1

`17-{-x-[-x-(-x)]}=-16`

`=>17-[x-(-x+x)]=-16`

`=>17-(x-0)=-16`

`=>17-x=-16`

`=>x=17+16`

`=>x=33`

Vậy `x=33`

Answer 2

\(17-\left\{-x\left[-x-\left(-x\right)\right]\right\}=-16\\ \Rightarrow17-\left[-x.0\right]=-16\\ \Leftrightarrow17=-16\left(\text{vô lý}\right)\)

Vậy \(x\in\varnothing\)

Answer 3

Ta có: \(17-\left\{-x-\left[-x-\left(-x\right)\right]\right\}=-16\)

\(\Leftrightarrow17-\left\{-x\right\}=-16\)

\(\Leftrightarrow x+17=-16\)

hay x=-33

Vậy: x=-33