Respuesta :
Solve for p by simplifying both sides of the equation, then isolating the variable.
p = -8
9-5p = -7 -7p+9-9
combine like terms (+9-9=0)
9-5p = -7 -7p
add 7p to both sides
9+2p = -7
subtract 9 from both sides
2p = -16
divide by 2 on both sides
p = -8