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There is no symbol between 12 and 5.
13+-12--5 = 6
6
The commutative property.
12 + 5 equals...
The expression is -9 + 13 + 12
13+-12--5 = 6
6
6
13 - 12 - (-5) 1 - (-5) 1 + 5 6
The commutative property.
12 + 5 equals...
30.. B
6
The given expression can be simplified to: 14k-12
The expression is -9 + 13 + 12
-13 Plug 5 in and multiply it by -5 which equals -25 12 - 25 = -13
13/12 cannot be simplified further.