Question

What is 3-x equals -11

Answer 1

3 - 14 = -11

Because you do 14 - 3 which equals eleven and then you add the negative sign

Answer 2

3x = -11?
You would divide each side by 3
3x/3 = -11/3
You get x alone, and since the signs are different, you end up with a negative integer.
x = You get 3.6666 ...
Then round it if necessary