\[\boxed{\mathbf{2.}\mathbf{223}\mathbf{.ОК\ ГДЗ - домашка\ на\ }5}\]
Пояснение.
Решение.
\[\textbf{а)}\ 1058 - (258 + 292) =\]
\[= (1058 - 258) - 292 =\]
\[= 800 - 292 = 508\]
\[\textbf{б)}\ (645 + 407) - 245 =\]
\[= (645 - 245) + 407 =\]
\[= 400 + 407 = 807\]
\[\textbf{в)}\ 493 + (711 - 193) =\]
\[= (493 - 193) + 711 =\]
\[= 300 + 711 = 1011\]
\[\textbf{г)}\ (747 + 1027) - 367 =\]
\[= 1767 - 367 = 1400\]
\[\textbf{д)}\ (384 + 216) - 399 =\]
\[= 600 - 399 = 201\]
\[\textbf{е)}\ (372 + 285) - (172 + 185) =\]
\[= (372 - 172) + (285 - 185) =\]
\[= 200 + 100 = 300\]