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 38
6* 8+3/8
51/8
Notice that we can also rewrite integers as improper fractions.
11 = 11/1
When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators.
11/1 - 51/8
Since 8 is a multiple of 1, we can multiply both the numerator and denominator of 111 by 8 to create a common denominator.
