Take the original price, multiply it by 20% (you have to move the decimal place two to the left, so it becomes .2), then subtract the answer from the original price.
39.99*.2= $7.998
39.99-7.998= $31.99
If you wanted to, you could also round the $7.998 to $8.00. Your answer would be the same.
6 = 12/2
8 = 24/3
4 = 16/4
3 = 18/6
1 = 9/9
5 = 25/5
Step-by-step explanation:

Answer: x=y+11
Step-by-step explanation:
Equation: x−y=11
Step 1. You need to add y to both sides.
x−y+y=11+y
x=y+11
Answer:
x=y+11