Answer:
Yes
Explanation:
-1x is a short notation for -1 * x. the "-" can stand for -1
So it would be (-1) * (1) * x
-x is also -1 * x
By the identity property of multiplication, a number x 1 remains the same number.
So it would be -1 * x, which is the same as -1 * x, so they're equal.