\[\boxed{\mathbf{Вариант\ 2.}}\]
\[\boxed{\mathbf{1.}}\]
\[1)\ 26 \cdot 10 + 26 \cdot 4 < 26 \cdot 40\]
\[26 \cdot (10 + 4) = 26 \cdot 14\]
\[26 \cdot 14 < 26 \cdot 40\]
\[2)\ 15 \cdot (30 + 8) > 15 \cdot 30 + 8\]
\[15 \cdot 30 + 15 \cdot 8 > 15 \cdot 30 + 8\]
\[\boxed{\mathbf{2.}}\]
\[1)\]
\[2)\ (34\ 211 - 28\ 067) \cdot 30 =\]
\[= 184\ 320\]
\[\boxed{\mathbf{3.}}\]