\[\boxed{\mathbf{3.}\mathbf{238}}\]
\[\textbf{а)}\ x\ :13 = 246 + 116\]
\[x\ :13 = 362\]
\[x = 362 \cdot 13\]
\[x = 4706.\]
\[\textbf{б)}\ 1368\ :y = 632 - 575\]
\[1368\ :y = 57\]
\[y = 1368\ :57\]
\[y = 24.\]
\[\textbf{в)}\ z \cdot 46 = 916 + 832\]
\[z \cdot 46 = 1748\]
\[z = 1748\ :46\]
\[z = 38.\]
\[\textbf{г)}\ (3705 + p)\ :59 = 63\]
\[3705 + p = 63 \cdot 59\]
\[p = 3717 - 3705\]
\[p = 12.\]
\[\textbf{д)}\ 936\ :(124 - k) = 8\]
\[124 - k = 936\ :8\]
\[124 - k = 117\]
\[k = 124 - 117\]
\[k = 7.\]
\[\textbf{е)}\ (150 - m) \cdot 33 = 1683\]
\[150 - m = 1683\ :33\]
\[150 - m = 51\]
\[m = 150 - 51\]
\[m = 99.\]