Thực hiện phép tính: a) 4/7 +3/7+-2/3      b) 4/19 . 2/5 - 4/19 . 7/5 c) - căn 25 + 2 căn {16} d) 2^4.2^6 / 2^10

a) \(\frac{4}{7} + \frac{3}{7} \cdot \left( { - \frac{2}{3}} \right);\)                                                      

b) \[\frac{4}{{19}} \cdot \frac{2}{5} - \frac{4}{{19}} \cdot \frac{7}{5};\] 

c) \( - \sqrt {25}  + 2\sqrt {16} ;\)  

d) \[\frac{{{2^4}{{.2}^6}}}{{{2^{10}}}}.\]