The answer is 12. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
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Plus 12 plus -13 plus plus 1 can be rewritten in mathematical terms as: 12+(-13)+1 or 12-13+1 12-13+1 =-1+1 =0
13 + (-5) = 8
negative 2
Positive six: 6 or +6.
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