64)⅔-(125)⅓+(243)¹/5=…

16-5+3=14...................

[tex] 64^{ \frac{2}{3} } - 125^{ \frac{1}{3} } + 243^{ \frac{1}{5} } \\ =2^{6. \frac{2}{3} } - 5^{3. \frac{1}{3} } + 3^{5. \frac{1}{5} } \\ = 2^{4} - 5^{1} + 3^{1} \\ =16-5+3 \\ =14[/tex]