Answer:
1
Step-by-step explanation:
To get the GCF of 13 and 15 we need to factor each value first and then we choose all the copies of factors and multiply them.
13: 13
15: 35
none of there factors are the same except 1
6,440
i just did the math for this
Answer:15
The box on the left is square in a square all side are equal
