0
Anonymous
702
Cristal Predovic ∙
815
5298
How about: 9+6 = 15
The factors of 21 that add up to 8 are 1 and 7.
factors of 30 that add to 17 are 2 and 15
268
23
The interior angles of a regular hexagon add up to 720 degrees
-10 & -18
720.
360
91
They add up to 720 degrees.
-273
27
46