|Noah Webster's Dictionary|
(adv.) In an equitable manner; justly; as, the laws should be equitably administered.
Equitably (2 Occurrences)
Colossians 4:1 Masters, deal justly and equitably with your slaves, knowing that you too have a Master in Heaven. (WEY)
Psalms 67:4 Let the nations rejoice and sing for joy: for thou wilt judge the peoples equitably; and the nations upon earth, thou wilt guide them. Selah. (DBY)