8a-(6a+2)=……………..

8a-(6a+2)
8a-2(3a+1)
2(4a-(3a+1))
2(4a-3a-1)
2(a-1)

jadi jawabannya 2(a-1)

semoga membantu

8a-(6a+2)
8a-2(3a+1)
2(4a-(3a+1))
2(4a-3a-1)
2(a-1)