202 and 218
The sum is 420
420
The sum of the first 20 even numbers... is 110
-356
The sum of 420 and 215 is 635.
420
2+4+6+8+10........+40=420
20 x 21 = 420
Possible the simplest math question ever. -420 / 3 = -140. So the numbers you need are -139 , -140 , -141.
There are infinitely many pairs of numbers whose difference is equal to the sum of 538 and 259 (which is 797). One such pair is 420 and 1217. Another pair is 0 and 797.
420
You can write a simple equation: x + (x+1) = 420, where x is the first number. Alternatively, you can make x the second number and write x + (x - 1) = 420. Using the first one, x + x + 1 = 420, so 2x + 1 = 420. 2x = 419 (subtract 1), so x = 209.5. You can check this answer: 209.5 + 210.5 = 420.