Add 5/15 and 54/80
5/15 + 54/80 is 121/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
5/15 = 5 × 16/15 × 16 = 80/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
54/80 = 54 × 3/80 × 3 = 162/240 - Add the two like fractions:
80/240 + 162/240 = 80 + 162/240 = 242/240 - 242/240 simplified gives 121/120
- So, 5/15 + 54/80 = 121/120
In mixed form: 11/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+54/80 5/30+54/80 5/45+54/80 25/15+54/80 5/75+54/80 35/15+54/80