Раскройте скобки:

\(\displaystyle -3 \cdot (s-t\,)=\)[?||-][ ][?|+|-][ ]

\(\displaystyle -(g-h\,)=\)[?||-][ ][?|+|-][ ]

\(\displaystyle -s\cdot (u-v\,)=\)[?||-][ ] [?|+|-][ ]