How to rearrange the Henderson-Hasselbalch equation?

– To solve for the ratio [A⁻]/[HA]: [A⁻]/[HA] = 10^(pH – pKa). – To solve for [A⁻]: [A⁻] = [HA] × 10^(pH – pKa). – To solve for [HA]: [HA] = [A⁻] / 10^(pH – pKa).