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Wiki User
SUM means plus
4+7=11
The sum of 3 plus 4 is 7.
-4
7 + 4 = 11
7
negative 4
-4 + 7 = 3
1+2+4 = 7
-7
The sum of 7 plus 71 is 77.
The sum of -4 and 7 is 3.
2x + 4