Solve: + ⁺0 + ⁻2 - ⁺8.
Solve: - ⁺3 - ⁺11 + ⁺15 + ⁻8.
Solve: - ⁺8 - ⁺5 + ⁻9 - ⁺11.
Solve: - ⁺0 + ⁺9 + ⁻11 - ⁺23.
What is the result: + (-2) . (-3) = ?
