The best way to solve this is to put it into a proportion:

So you cross multiply to get:

(the 21 is from

•84)
Then multiply by

And you get $28, so the reduced price would be $28.
You can calculate that as (x * 50)/100 = 37
x*50 = 3700
x=74

≈1.41
12 x 1.41=<span>16.92</span>
Answer:
-12p-20
Step-by-step explanation:
{-12-6p-(-2)}−12−6p−(−2)
-12-6p+2−12−6p+2
-12p-20