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
8 512
8* 12+5/12
101/12
11 14
11* 4+1/4
45/4
When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators.
101/12 + 45/4
Since 12 is a multiple of 4, we can multiply both the numerator and denominator of 454 by 3 to create a common denominator.
