Question

5a-7b+8c,-3a+3b-8c,-9a+3b+7c

Answer 1

5a-7b+8c-3a+3b-8c-9a+3b+7c
5a-3a-9a-7b+3b+3b+8c-8c+7c
2a-9a-4b+3b+7c
-7a-b+7c

If it helps you then please mark it as brainliest

Answer 2

HERE IS YOUR ANSWER..⬇⬇
________________________________________

$(5a - 7b + 8c) + ( - 3a + 3b - 8c) + ( - 9a + 3b + 7c) \\ \\ = 5a - 7b + 8c - 3a + 3b - 8c - 9a + 3b + 7c \\ \\ = 5a - 3a - 9a - 7b + 3b + 3b + 8c - 8c + 7c \\ \\ = - 7a - b + 7c$

________________________________________

✝✝…HOPE…IT…HELPS…YOU…✝✝