Question

add- 6a+8b-7c and a-3b-2c​

Answer 1

$- 6a + 8b - 7c \\ + a - 3b - 2c \\ - - - - - - - \\ - 5a + 5b - 9c \\ - - - - - - - -$

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Answer 2

6a + 8b - 7c

+ a - 3b - 2c

___________

7a + 5b - 9c

____________

I hope it helps you