4n+8=9n-7

Answer 1

4n + 8 = 9n-7
4n+8-8=9n-7-8
4n=9n-15
4n-9n=9n-9n-15
-5n=-15
-5n/-5=-15/-5
n=3

Answer 2

15 over 13 as a fraction or .8666666............