Hello there! P is equal to 21.
In this equation, you are working to isolate p. To do this, get all of the variables on one side of the equation.
In this case we have p/7 =3. To cancel out the 7 and get p alone on one side, multiply both sides by 7.
p/7x7 = 3x7
p = 21
Now that p is isolated we have our value for p. I hope this helps and have a great rest of your day!