Упрости: \({\left[{{\left( {\frac{x}{3}} \right)}^{15}} \cdot {\left( {\frac{x}{3}} \right)}^{3}:{{\left( {\frac{x}{3}} \right)}^{18}} - {\frac{x}{3}}\right]}^{3}\).

Выбери правильные варианты ответа:

• \(1-\frac{x^3}{27}\)
• \(-\frac{1}{27}x^3\)
• \(\frac{x^3}{27}\)
• \(1-\frac{1}{27}x^3\)
• \(-\frac{x^3}{27}\)