Answer:
p = 5/8
Step-by-step explanation:
We use the inverse of the addition of the constant to isolate the variable p. We do this using the subtraction property of equality: subtracting the same number from both sides of the equation leaves the value of the variable unchanged.
7/8 = 1/4 + p . . . . . given
7/8 -1/4 = 1/4 -1/4 +p . . . . subtract 1/4 from both sides
5/8 = p . . . . . . . . simplify
p = 5/8