Respuesta :
The gcf for 13 and 65 is 13 because that is the greatest number that 13 and 65 can divide into and for the 2nd question it is 13(1+5) bc you put the 13x1 equal 13 and 13x5 equals 65 so ya.
Answer:
gcf = 13
13(1+5)
Step-by-step explanation:
GCF = 13, 13*5=65
= 13 + 13(5)
= 13(1+5)
which also = 13(6) = 78 = 13 + 65