14 = -(p-8)
Step 1 : Distribute the negative sign. This is equivalent to multiplying each term in the parenthesis by -1.
14 = -p+8
Step 2: Subtract 8 from each side to isolate the -p.
14 - 8 = -p +8 - 8
6 = -p
Step 3: Multiply everything by -1 to get what p is equivalent to.
6 * -1 = -p * -1
-6 = p
Which can be rewritten as
p = -6