$6^{5} \times 6^{6} = 6$

$6^{2} \times 6^{-7} = 6$

$2^{-2} \times 2^{3} = 2$

$6^{-7} \times 6^{-6} = 6$

$4^{5} \times 4^{6} = 4$

$\dfrac{4^{11} }{ 4^{4} } = 4$

$\dfrac{5^{5} }{ 5^{9} } = 5$

$\dfrac{2^{-4} }{ 2^{3} } = 2$

$\dfrac{3^{2} }{ 3^{-2} } = 3$

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

$\left(6^{2}\right)^{-1} = 6$

$\left(8^{-2}\right)^{-7} = 8$

$\left(7^{6}\right)^{-1} = 7$

$\left(7^{-4}\right)^{3} = 7$

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

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

$4^{7} \times 9^{7} = 36$

$9^{4} \times 2^{4} = $ $ ^{4}$

$9^{4} \times 3^{4} = 27$

$\left(\dfrac{7 }{ 3}\right)^{2} = $ $7$$3$$ $

$\dfrac{77^{4} }{ 11^{4}} = $ $ ^{4}$

$\left(\dfrac{7 }{ 19}\right)^{2} = $ $7$$19$$ $

$\dfrac{6^{4} }{ 2^{4}} = $ $ ^{4}$