Its 8.
_08___
7 / 56
56
-----------------
0 <--- Leftover
So the answer is 8! Hope it helps! :D
-3 is one of them hope this helps
The answer is B. There can not be any alike "x" inputs.
(7x - 23)° + (11x + 23)° = 180°
7x - 23° + 11x + 23° = 180°
18x = 180° / : 18
x = 10°