Задание

Расставьте знаки в произведениях:

\(\displaystyle \times\) \(\displaystyle 8\) \(\displaystyle -5\)
\(\displaystyle 9\) [?||-]\(\displaystyle 72\) [?||-]\(\displaystyle 45\)
\(\displaystyle -7\) [?||-]\(\displaystyle 56\) [?||-]\(\displaystyle 35\)