a) 10 - ( x - 4 ) = 14
10 - x + 4 = 14
10 - x = 14 - 4
10 - x = 10
x = 10 - 10
x = 0
b) | x - 1 | = 4
\(\Rightarrow\hept{\begin{cases}x-1=4\\x-1=-4\end{cases}\Leftrightarrow\hept{\begin{cases}x=4+1=5\\x=-4+1=-3\end{cases}}}\)
a, 10 - [x-4] = 14
=> x - 4 = 10 - 14
=> x - 4 = -4
=> x = -4 + 4
=> x = 0
b, |x-1| = 4
\(\Rightarrow\hept{\begin{cases}x-1=4\\x-1=-4\end{cases}\Rightarrow}\hept{\begin{cases}x=5\\x=-3\end{cases}}\)
a) 10 - ( x - 4 ) = 14
10 - x + 4 = 14
10 - x = 14 - 4
10 - x = 10
x = 10 - 10
x = 0
b) | x - 1 | = 4
Ta có 2 trường hợp sau:
\(\hept{\begin{cases}\left|x-1\right|=-4\Rightarrow x=-3\\\left|x-1\right|=4\Rightarrow x=5\end{cases}}\)
