Pareho = the same person or object

Parehas = identical or matching system

Correct: "Pareho kaming nabigyan ng ayuda" (We were both given assistance)", focus on "we".

Correct: "Parehas ang ayudang ibinigay sa lahat" (Identical assistance was given to all), focus on "assistance".

Also correct: "Tig-isang libo ang natanggap ng mga manggagawa. Tigalawang libo ang natanggap ng mga tambay. Hindi parehas."