Answer:
X = 3
Explanation:
To solve this you want to first make the X variable alone by itself by moving it to the left or right it doesn't really matter, for this I moved it to the left making the new equation
-x = -1 - 2
I then make the 2 a negative using the order of operations and a negative adding a negative makes -3 making the following
-x = -3
then I change the signs making it
x = 3