Before we can evaluate a sum or difference involving mixed numbers, the mixed numbers must first be rewritten as fractions.
a bc
a* c+b/c
Simplify
-1 56
-(1* 6+5/6)
-11/6
5 13
5* 3+1/3
16/3
When adding or subtracting fractions they should have the same denominator. In this exercise, we have two fractions with different denominators.
-11/6 + 16/3
Since 6 is a multiple of 3, we can multiply both the numerator and denominator of 163 by 2 to create a common denominator.
