Exercise 24 Page 85

To solve the equation we have to isolate p on one side. By subtracting 7.1 from both sides, we can cancel out the 7.1 and isolate p.

We find p=-9.6 is the solution to the equation. To check that we have the correct solution, we can substitute p=-9.6 into the original equation and simplify.

Since the left-hand side and right-hand side are equal, p=-9.6 is the correct solution.