123123 + -123123 = 0. Whenever you have two numbers added together of equal value, but one is negative and the other positive, e.g. 5 + -5 or 7 + -7, the answer is always 0.
The answer is 246246
It is: 123+123 = 246
123 abc 123 baby you and me
123 124 + 125 ------ 372
123 plus 88 equals 211
123 + 456 + 7890 = 8469
246.
246
112 + 11 = 123
456 + 789 + 123 + 123456789 = 123458157
34 + 123 = 157
1252 + 123 = 125