To simplify the expression, we first need to combine like terms:
-(6a - 8b) + (14a - 7b) - 9a
= -6a + 8b + 14a - 7b - 9a
Now, combine the terms with the same variables:
= (-6a + 14a - 9a) + (8b - 7b)
= -1a + 1b
= -a + b
Therefore, the simplified expression is -a + b.
To simplify the expression, we first need to combine like terms:
-(6a - 8b) + (14a - 7b) - 9a
= -6a + 8b + 14a - 7b - 9a
Now, combine the terms with the same variables:
= (-6a + 14a - 9a) + (8b - 7b)
= -1a + 1b
= -a + b
Therefore, the simplified expression is -a + b.