please answer the following questions only 5. 7. 8. 10. 11. and 12.
5) -20b+15
7) -30+9n
8)-48a+36
[tex] 10) -{55}{24} n -\frac{185}{24} [/tex]
[tex]11) - \frac{15}{15} n + \frac{9}{15} [/tex]
[tex]12) - \frac{1}{3} n + \frac{25}{21} [/tex]