What is the distributive property of 12 + 20

12 + 20 = 4x3 + 4x5 = 4x (3 + 5)

Step-by-step explanation:

The distributive property states that

a * (b + c) = a*b + a*c

You can use the distributive property in reverse to factor out a common factor from the sum of 2 numbers. If you realize that 12 = 4*3 and 20 = 4*5 then you can write

12 + 20 = 4*3 + 4*5 = 4 * (3 + 5)