Respuesta :

20 + 16......GCF (greatest common factor) = 4

   20    +    16
(4 * 5) + (4 * 4) = 
4(5 + 4) <=== ur answer

First, I would find that the GCF of 20 and 16 is 4. Then, I would divide both 20 and 16 by 4. Last, I would use the distributive property to write the sum as 4(5 + 4).