To add two integers with unlike signs:
-- Find the difference between their sizes, ignoring their signs.
-- Give the difference the sign of the integer with the larger size.
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For each pair of such integers, find the difference between the absolute values of the two integers and allocate the sign of the bigger number to it.
To add two integers with opposite signs . . . -- Ignore the signs, and write the difference between the two numbers. -- Give it the same sign as the larger original number has.
If the two signs are the same it is positive but if they are both different itis negative
Two integerss add to zero when their absolute values are equal and they have opposite signs.
Depends on how large each integer is. +1-2 or +2-1. Different signs depending on the size of the integers.