16?
7 + 5 + 4 + 5 + 3 + 4 + 6 + 5 + 4 + 5 + 6 + 4 + 7 = 65
-7
-5+7--4+12 = 18
3 + 4 + 7 = 14
-4 + 5 + (-7) = -6
102
9 + 4 + 7 + 8 = 28
Commutative property of addition. :)
The commutative property
The problem of -5 plus 7 - (-4 plus -12) is equal to 18.
3+4=7+0=7