Ex 2: Subtracting Integers (Two Digit Integers)

This video provides examples of how to determine the difference of integers by rewriting the subtract as addition.

[brewski]

What if both are negative? And/Or Both are positive?

[jasonmackenzie]

@brewski314 Long answer: Recall that subtracting an integer is the same as adding its opposite (negative). Also, remember the rules for adding integers:

Adding Integers with Like Signs:
(1) Add the absolute values of the two integers.
(2) Prefix the sign of the integers.

Adding Integers with Unlike Signs:
(1) Find the absolute values of the two integers, and subtract the smaller absolute value from the larger one.
(2) Prefix the sign of the integer with the larger absolute value to the difference obtained in step 1.

[musicluvabarrett]

@brewski314 You do the same thing just add the absolute values.