Câu $c$ kết quả hơi to bạn nhé,có thể bạn ghi sai đề.
$a$) $5x - (-19) = 29$
$⇔$ $5x + 19=29$
$⇔$ $5x = 10$
$⇔$ $x=2$
Vậy $x=2$
$b$) $|x-2|=8$
$⇒$ \(\left[ \begin{array}{l}x-2=8\\x-2=-8\end{array} \right.\)
$⇔$ \(\left[ \begin{array}{l}x=10\\x=-6\end{array} \right.\)
Vậy $x$ ∈ {$-6;10$}
$c$) $|x-7| - 15^6 = |-6|$
$⇔$ $|x-7| - 11390625 = 6$
$⇔$ $|x-7| = 11390631$
$⇒$ \(\left[ \begin{array}{l}x-7=11390631\\x-7=-11390631\end{array} \right.\)
$⇔$ \(\left[ \begin{array}{l}x=11390638\\x=-11390624\end{array} \right.\)
Vậy $x$ ∈ {$-11390624;11390638$}