Решение:
- \( a) 33x - 28x - 24 = 251 \)
\( (33 - 28)x - 24 = 251 \)
\( 5x - 24 = 251 \)
\( 5x = 251 + 24 \)
\( 5x = 275 \)
\( x = 275 : 5 \)
\( x = 55 \) - \( б) (17x - 3x) : 17 = 364 \)
\( 14x : 17 = 364 \)
\( 14x = 364 \times 17 \)
\( 14x = 6188 \)
\( x = 6188 : 14 \)
\( x = 442 \)
Ответ: а) x = 55; б) x = 442.