Раскройте скобки:

\(\displaystyle -17 \cdot (-z-b\,)=\)[?||-][ ][?|+|-][ ]

\(\displaystyle -(-a-w\,)=\)[?||-][ ][?|+|-][ ]

\(\displaystyle -x\cdot (-u-c\,)=\)[?||-][ ] [?|+|-][ ]