Hi Jace,
We solve the equation as follows:
p+7-5=-10-3p
p+2=-10-3p Combine like terms
p+3p+2=-10 Add 3p to both sides
p+3p=-10-2 Subtract -2 from both sides
4p=-12 Combine like terms
p=-3 Divide both sides by 4
∴P is equal to -3.
Best,
Star