0
Wiki User
26
true
Tautology?
-1
144 9+7 = 16 and 9*16 = 144
1
-17
-13+4+(-8)= -9+(-8) = -9-8 = -17
9
True. 9 + 8 + 1= 18 and 9 + 1 + 8 =18.
Yes, it is true.
Commutatitivity or the Abelian property
If there is an equals sign after the first 8, the answer is yes.