$10^{4} \times 10^{5} = 10$

$\left(4^{-7}\right)^{4} = 4$

$\dfrac{7^{-5}}{7^{7}} = 7$

$\dfrac{2^{-2}}{2^{-6}} = 2$

$\dfrac{9^{2}}{9^{-4}\times 9^{1}} = 9$

$\dfrac{7^{-4} \times 7^{-2}}{7^{4}} = 7$

$\dfrac{6^{4} \times 6^{1}}{6^{-4}\times 6^{-2}} = 6$

$\dfrac{\left(10^{5}\right)^{3}}{10^{-4}} = 10$

$\dfrac{6^{2} \times 6^{-5}}{6^{-1}} = 6$

$4^{3} \times 4^{-4} \times 4^{7} = 4$