Help plz and check just to make sue what is this

Question

asked Sep 2, 2019 154k views

1 Answer

Zimmryan · Answer 1 · 2019-09-06T15:38:44+0000

use cross products to solve

5* (n-9) = 8*n

distribute

5n-45 = 8n

subtract 5n from both sides

-45 = 3n

divide both sides by 3

-15 = n