Fill in the blank. 1. 4 + = 0 2. + 10 = 0 3. -12 + 12 = 4. 6 + 6 = a. Is there an integer which can be added to another integer that gives a sum of zero? b. If the integer is n, what can be added to n that gives a sum of 0? C. Is there an integer which can be multiplied to another integer that gives a product of one?
