\[x + 2\frac{7}{16} = 5\frac{3}{16}\]
\[x = 5\frac{3}{16} - 2\frac{7}{16}\]
\[x = 4\frac{19}{16} - 2\frac{7}{16}\]
\[x = 2\frac{12}{16} = 2\frac{3}{4}.\]