6 + 3 + 21 + 63 + 21 = 114
21 times 9 plus 6 is equal to 195.
15+6 is 21. 13 + what is 21? 21 - 13 is 8 Eight
10 + 6 + 5 = 21 Here is it done in steps: 10+6+5=21 ^ 16 + 5 ^ 21
21
Are you trying to say 17 + 6 + (7-9) ? = 21
-21
8 plus 7 is 15. 15 plus 6 is 21. :)
The answer is 21
-6 + -7 + -8 = -21
21
6/7 = 18/21 + 1/21 = 19/21