What is the distributive property of 4 (28) = 4 (20) + 4 ()

A (B+C) = AB+AC

4 (28) = 4 (20) + 4 (?)

28-20=8

?=8

Let the missing integer be x.

Now,

4 (28) = 4 (20) + 4 (x)

According to distributive property,

A (B+C) = AB + AC

Substituting dsitributive property into the equation, we get,

4 (28) = 4 (20) + 4 (28 - 20)

4 (28) = 4 (20) + 4 (8)

Thus, the missing integer is 8.

(Check it!)

4 (28) = 4 (20) + 4 (8)

112 = 80 + 32

112 = 112;

or, LHS = RHS.

Hence proved.