\[\boxed{\mathbf{86\ (86)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 9996.\]
\[2)\ 9990.\]
\[3)\ 9990.\]
\[4)\ 9990.\]
\[\boxed{\mathbf{86}.}\]
\[1)\ 374 + x\]
\[x = 268:\]
\[374 + 268 = 642.\]
\[2)\ y\ :27 + 33\]
\[y = 729:\]
\[729\ :27 + 33 = 27 + 33 = 60.\]
\[3)\ 84n - m\]
\[n = 5;\ \ m = 355:\]
\[84 \cdot 5 - 355 = 420 - 355 = 65.\]
\[4)\ 5a^{3} + 1\]
\[a = 4:\]
\[5 \cdot 4^{3} + 1 = 5 \cdot 64 + 1 =\]
\[= 320 + 1 = 321.\]