2. Реши уравнения: a) 40205 - x = 39747 б) x * 64 = 516480

a) \[40205 - x = 39747\] \[x = 40205 - 39747\] \[x = 458\] б) \[x \cdot 64 = 516480\] \[x = \frac{516480}{64}\] \[x = 8070\]