This could be intended as a trick question; the answer is 0. 0 + 6 = 12 - 6
12 plus 0 is 12
If: x+3+6x+9 = 0 then 7x+12 = 0 So: 7x = -12 and x = -12/7
There are infinitely many possible answers. 1.5 + 2.5 + 18 = 10 + 0 + 12
0
N=0.
This could be intended as a trick question; the answer is 0. 0 + 6 = 12 - 6
12 plus 0 is 12
If: x+3+6x+9 = 0 then 7x+12 = 0 So: 7x = -12 and x = -12/7
There are infinitely many possible answers. 1.5 + 2.5 + 18 = 10 + 0 + 12
0
(x + 12)(x - 6) = 0 x = 6 or -12
I come up with 20.
(11, 1, 0) and (0, 1, 11) are the two possible solutions.
x = 3 and y = 0
(x + 3)(x + 4)
It is the additive identity property of zero. (n+0=n)