Question

Help and explain explain !!!!!!!!!!

Answer 1

Answer:

$x=-1\text{ or }x=11$

Step-by-step explanation:

For $a=|b|$, we have two cases:

$\begin{cases}a=b,\\a=-b\end{cases}$

Therefore, for $18=|15-3x|$, we have the following cases:

$\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}$

Solving, we have:

$\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}$.

Therefore,

$\implies \boxed{x=-1\text{ or }x=11}$