Answer:
[tex]p=-19[/tex]
Step-by-step explanation:
[tex]13=-6-p[/tex]
Add 6 to both sides (to isolate the variable p)
[tex]13+6=-6+6-p[/tex]
[tex]19=-p[/tex]
This can also be seen as
[tex]19=-1p[/tex]
Divide both sides by -1 to isolate p (from the negative)
[tex]\frac{19}{-1} =\frac{-1p}{-1}[/tex]
[tex]-19=p[/tex]
Finito.
