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
6 13
6* 3+1/3
19/3
1 23
1* 3+2/3
5/3
5 59
5* 9+5/9
50/9
When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators.
19/3 + 5/3 + 50/9
Since 9 is a multiple of 3, we can multiply both the numerator and denominator of 193 and 343by 3 to create a common denominator.
