Answer:
-20
Step-by-step explanation:
Lets substitute to solve:
[tex]\frac{mn}{p} +(-n)[/tex]
[tex]\frac{2(12)}{-3} +(-12)[/tex]
[tex]\frac{24}{-3} +(-12)[/tex]
[tex]-8} +(-12)[/tex]
[tex]-20[/tex]
yeah i agree it may be 20
