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
3 27
3* 7+2/7
23/7
4 37
4* 7+3/7
31/7
When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with the same denominator.
23/7 + 31/7
Because we have a common denominator, we can proceed to simplifying the expression.
