They are: 2+3 = 5
90 + 3 + 6
How about 3 and 6
15
A right angle triangle has 3 sides and 3 inside angles of 90 degrees and two acute angles that add up to 90 degrees and all 3 angles add up to 180 degrees.
They are: 2+3 = 5
-1005
The factors of -504 are 2, 2, 2, 3, 3, 7 and -1. Then the factors that add to -3 are -24 and 21.
-8
23
1510
-3
8280
268
90 + 3 + 6
How about 3 and 6
15