Question

solve:(1/1+a^m-n)+(1/1+a^n-m)

Answer 1

$\left(\frac{1}{1}+a^{m-n}\right)+\left(\frac{1}{1}+a^{n-m}\right)$
$=\frac{1}{1}+a^{m-n}+\frac{1}{1}+a^{n-m}$
$=\frac{1}{1}+\frac{1}{1}+a^{m-n}+a^{-m+n}$
$=2\cdot \frac{1}{1}+a^{m-n}+a^{n-m}$
$=2+a^{m-n}+a^{n-m}$

Hope this may help you.