\[\boxed{\mathbf{356\ (356)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\(1)\ 429 + m = 2106\)
\[m = 2106 - 429\]
\[m = 1677\]
\[Ответ:1677.\]
\(2)\ 348 - k = 154\)
\[k = 348 - 154\]
\[k = 194\]
\[Ответ:194.\]
\(3)\ (m + 326) - 569 = 674\)
\[m + 326 = 674 + 569\]
\[m = 1243 - 326\]
\[m = 917\]
\[Ответ:917.\]
\(4)\ 5084 - (k - 299) = 568\)
\[k - 299 = 5084 - 568\]
\[k = 4516 + 299\]
\[k = 4815\]
\[Ответ:4815.\]