g, [119-(3³-10)]x=2448
⇒[119-27+10]x=2448
⇒102x=2448
⇒x=24
h, [(10-x).2+51]:3-2=3
⇒[(10-x).2+51]:3=5
⇒(10-x).2+51=15
⇒(10-x).2=-36
⇒10-x=-18
⇒x=28
k, -12-|13-x|=-21
⇒|13-x|=9
⇒\(\left[ \begin{array}{l}13-x=9\\13-x=-9\end{array} \right.\) =>\(\left[ \begin{array}{l}x=4\\x=22\end{array} \right.\)
Vậy x=4 hoặc x=22
l, 8≤|x-6|<9
⇒8+6≤|x-6+6|<9+6
⇒14≤x<15
⇒x=14
Vậy x=14
