What is the solution set for [-x]=10

X = - 10

Because it is the "absolute value" of "10"

Here's why

-X - 10 = 0, right?

So, now we have to add a positive 10 to each of our sides to get one step closer to our answer

-X + 10 = 0 ⬅️cancel this

0 + 10 = 10 ⬅️keep this

We can multiply by a negative 1 (-1)

10 (-1) = - 10

0 (-1) = - 0

So that's how we found out that X = - 10