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Wiki User
9
Dewitt Abbott ∙
3
It is: 3+6 = 9
3 and 9 Difference: 9-3=6 Sum: 9+3=12
6 - 3 = 3
The sum of 3 and -6 is -3.
6
the sum of 3 times m and n
6 + 3 = 9 6 - 3 = 3