Add 54/15 and 80/20
1st number: 3 9/15, 2nd number: 4 0/20
54/15 + 80/20 is 38/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
54/15 = 54 × 4/15 × 4 = 216/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
80/20 = 80 × 3/20 × 3 = 240/60 - Add the two like fractions:
216/60 + 240/60 = 216 + 240/60 = 456/60 - 456/60 simplified gives 38/5
- So, 54/15 + 80/20 = 38/5
In mixed form: 73/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+80/20 54/15+80/40 54/45+80/20 54/15+80/60 54/75+80/20