Rules of Addition/Sum and Subtraction/Difference of Integers Let us understand it with the help of an example. EXAMPLE 1: Add the integers – 5 and – 4. In old math books, this addition/sum of integers is written as: – 5 + (- 4) and in new math books, this addition/sum is written as: – 5… Read More »Rules of Addition/sum and Subtraction/difference of Integers