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How to Add & Subtract

When you add two numbers with different signs, you subtract and keep the sign of the largest number.
For example:
- 10 + 4= - 6, - 6+4= - 2.


When you add two numbers with the same sign, you add and keep the same sign. For example: -3 - 2= - 5 , -6 - 9= - 15.