Explain how you can use aboslute value to tell wether the sum of two integers is positive or negative.

If exactly one integer (B) has a negative sign, the sign of the sum A + B will be negative if |B| > A. Otherwise it will be positive or zero.

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If both signs are positive, the sum is positive. If both signs are negative, the sum is negative. If one value is zero, the sum is the other value.