Has anybody seen this kind of problem?

when I refered to the equation that I labeled already, it gave (equation 1.1) not (1.1) which is I want to have.

it is like, I wrote:

\begin{equation}

x=5 (1.1)

\label{A}

\end{equation}

when i refer it,

(\ref{A}), it gave me (equation 1.1), not (1.1).

Do you know what is the problem? Thank you!!!!!