This, of course, has infinitely many solutions. Just pick ANY five numbers, and solve for the sixth. Here are a few:
0 + 0 + 0 + 0 + 0 + 20
0 + 0 + 0 + 0 + 0.5 + 19.5
1 + 1 + 1 + 1 + 1 + 15
etc.
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The two numbers you are looking for are 48 and -28. When multiplied together, 48 × -28 equals -1344, and when added, 48 + (-28) equals 20.
The average. Add all the numbers together and divide that by how many numbers there are. Example: 6,2,3,4,5. Added together equals 20. Divided by all of the numbers (5) equals 4. Your answer would be 4.
3.3333 x 6 = 20
The sum of the first six numbers is (6 x 19) = 114The sum of the new group of seven numbers is (7 x 20) = 140The seventh number is (140 - 114) = 26.==========================================The seventh number contains enough material to make itself 20and also to raise each of the previous six numbers from 19 to 20.Therefore it must be [ 20 + (6 x 1) ] = (20 + 6) = 26.