\[\boxed{\text{211.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ x \cdot 60 = 6907 + 43\ 493\]
\[x \cdot 60 = 50\ 400\]
\[x = 50\ 400\ :60\]
\[x = 840.\]
\[2)\ 40\ 450\ :x = 7\ 621 - 7\ 571\]
\(40\ 450\ :x = 50\)
\[x = 40\ 450\ :50\]
\[x = 809.\]