27
do you mean what is 3+6+9-12? The answer is 6: 3+6=9 9+9=18 18-12=6 :)
12 plus 9 equals 21.
No! It equals 15, but 9-6=3.
-6
122 !
(6 x 9) + 6 + 9 = 69
x=6
49 plus 56 plus 112 equals 217.
4x + 6 = 6x - 12-4x -4x6 = 2x - 12+12 +1218 = 2xx=9
-9
Commutativity.
that equals 72