Question

Simplify :
-2n - (9 - 10n)

9a + 10 ( 6a - 1)

Answer 1

-2n-9-10n
69a-10
Hope this helps

Answer 2

1) -2n - (9 - 10n)

= -2n - 9 + 10n

= 8n - 9

2) 9a + 10 ( 6a - 1)

= 9a + 60a - 10

= 69a - 10

Hope this helps!