1) (-12)(1) = -12
2) (11 + 7) + 2 = 11 + (7 + 2)
3) 13 + 1 = 1 + 13
4) 7 (2 + 6) = (7)(2) + (7)(6)
5) 21 + 34 - 55 6) (-117) + 0 = -117 7) 39 +(-39) - 0
Choices:
a) closure property
b) commutative property
c) associative property
d) distributive property
e) identity property
f) inverse property​