Question

22.) -5n+3(6+7n)
23.) -2n-(9-10n)
24.) 10-5(9n-9)

Answer 1

$22)\\\ -5n+3(6+7n)\\-5n+18+21n\\16n+18\\\\23)\\-2n-(9-10n)\\-2n-9+10n\\8n-9\\\\24)\\10-5(9n-9)\\10-45n-9\\-45n+1$