Which equation requires the multiplication property of equality to be solved?

1: 6a=420

2: a+6=420

3:a/6=420

4:a-6=42

The Third answer is correct in this problem

Step-by-step explanation:

just think, with addition you use subtraction to find the answer. So multiplication property basically means to multiply. If you look at the third answer there is a division problem. To be able to find the answer you would use the multiplication property. (just use opposites as a shorter way to explain) your not really solving it your really just predicting.

The answer will be 3