1. Adding/Subtracting Fractions - we need a _______________
2. Adding/Subtracting expressions - we need
______________
3.Adding/Subtracting in SN - we need
______________
1. common denominator
2. like terms
3. signed numbers
are you sure?
I apologize for the confusion. Let me correct that:
1. Adding/Subtracting Fractions - we need a common denominator
2. Adding/Subtracting expressions - we need like terms
3. Adding/Subtracting in SN - we need to apply the rules for adding/subtracting signed numbers