Question

Plz help me or I will get my phone taken away

Answer 1

5 divided by nine multiply by n equal 4 divided by nine times n plus 4
5/9*n subtract 4/9 multiply n equals 4
1/9*n equal 4
n=36

Answer 2

I believe it’s 18 because you find 5 then another 4 which is 9 and you guys already had 9, 9 plus 9 equal 18