No, 1 plus 7 is not 3.
-7
9+7+5+3+1 16+5+3+1 21+3+1 24+1 25
1 + 3 + 5 + 7 + 201 = 217
1+3+5+7+9=25
(7-3)^2 plus (7-1)^2 = 16+36
3 + 3 - 7 + 2 - 1 + 109 = 109
7 and 1/3
76
1/5 plus 1/7 plus 3/10 is equal to 0.642857
7
1 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 46
16