To add or subtract fractions, they need to have the same denominator.
157/15
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 23
6* 3+2/3
20/3
3 45
3* 5+4/5
19/5
In this exercise, we have two fractions with different denominators.
20/3 + 19/5
Since 3 is not a multiple of 5, we have to multiply both the numerator and denominator of 203 by 5 and 195 by 3, to create a common denominator.
