(a+b+c) + (8a-7b-9c) By Admin ReiPosted on December 11, 2022 (a+b+c) + (8a-7b-9c) Jawaban Terkonfirmasi A + b + c + (8a – 7b – 9c)= a + b + c + 8a – 7b – 9c= 9a – 6b – 8c