\(\left|x+2\right|=12-\left(-3\right)+\left|-4\right|\)
\(\left|x+2\right|=19\)
\(\Rightarrow\orbr{\begin{cases}x+2=19\\x+2=-19\end{cases}\Rightarrow}\orbr{\begin{cases}x=17\\x=-21\end{cases}}\)
Vậy \(x\in\left\{17;-21\right\}\)
Ta có : \(\left|x+2\right|=12-\left(-3\right)+\left|-4\right|\)
\(\Rightarrow\left|x+2\right|=12+3+4\)
\(\Rightarrow\left|x+2\right|=19\)
\(\Rightarrow\orbr{\begin{cases}x+2=19\\x+2=-19\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=17\\x=-21\end{cases}}\)
Vậy \(x=17;x=-21\)
|x+2| = 12 - (-3) + |-4|
|x+2| = 12+3+4
|x+2| = 19
x+2 = 19 hoặc x+2 = -19
x = 19-2 hoặc x = -19 - 2
x = 17 hoặc x = -21
Vậy ....
| x + 2 | = 12 - ( - 3 ) + | - 4 |
| x + 2 | = 12 + 3 + 4
| x + 2 | = 19
=> x + 2 = 19
x = 19 - 2
x = 17
hoặc x + 2 = - 19
x = - 19 - 2
x = - 21
Vậy \(x\in\text{{}\)17 ; - 21 }