7. Solve the equations: 329 + x = 754 6 * x = 96 x : 3 = 18

Решение:

1. \( 329 + x = 754 \)
   \( x = 754 - 329 \)
   \( x = 425 \)
2. \( 6 \times x = 96 \)
   \( x = 96 : 6 \)
   \( x = 16 \)
3. \( x : 3 = 18 \)
   \( x = 18 \times 3 \)
   \( x = 54 \)

Ответ: 425; 16; 54.