Explanation:
what do you not understand about this very, very simple task ?
that would be important to know to further help you. as if you do not understand this, you are in the completely wrong grade.
(x - 2) = -5.5
as there are no further operations involved, we can simply ignore the brackets.
x - 2 = -5.5
when we change now one side (like adding 2 on the left side, so that we end up with "x ="), we need to do the same change on the other side, so that the relation of both sides stays the same.
x = -3.5
we added 2 to the left side, so we also had to add 2 to the right side.
and there you have it. that's all that was needed here.