Question

помогите пожалуйста!!!!!!!!!

Answer 1

!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

$frac{k}{4t-8}-frac{k}{8t-16}=frac{k}{4(t-2)}-frac{k}{8(t-2)}=frac{2k-k}{8(t-2)}=frac{1*k}{8(t-2)}$