Solve: - ⁺1 - ⁺0 + ⁻11 + ⁺8.
Solve: ⁻2 + ⁺21 - ⁺15
Solve: - ⁺10 + ⁺9 + - ⁻5.
Solve: - ⁺0 + ⁺3 - ⁺11 + ⁺12
Solve: - ⁺5 + ⁻11 + ⁺6.