a) \(3\left|x\right|=18\Rightarrow\left|x\right|=6\Rightarrow x=\pm6\)
Vậy \(x=\pm6\)
b) \(-11\left|x\right|=-22\Rightarrow\left|x\right|=2\Rightarrow x=\pm2\)
Vậy \(x=\pm2\)
a/ 3|x| = 18 => |x| = 6 => x = 6 hoặc x = -6
b/ -11|x| = -22 => |x| = 2 => x = 2 hoặc x = -2
a/3|x|=18=>|x|=6=>x=6 hay x=-6
-11|x|=-22=>|x|=2=>x=2 hay -2