Belows is apart of my code and I want to reduce space between the two pictues and also want to make them larger. Please suggest me.
\begin{figure}[!htbp]
% \centering
\includegraphics[width=0.475\linewidth]{drww_pre_3.pdf}
\includegraphics[width=0.475\linewidth]{drbb_pre_4.pdf}
\caption{Distributions of the kinematic variables used in the analysis after preselection. The signal has been scaled by a factor of }
\end{figure}

%to the end of the first line containing\includegraphics. Otherwise, the end-of-line will introduce a stray space character. – Steven B. Segletes Mar 26 '19 at 18:43\fbox{includegraphics[width=0.475\linewidth]{drbb_pre_4.pdf}}is the frame tight around the image? – David Carlisle Mar 26 '19 at 19:27