Add 15/45 and 28/60
15/45 + 28/60 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
28/60 = 28 × 3/60 × 3 = 84/180 - Add the two like fractions:
60/180 + 84/180 = 60 + 84/180 = 144/180 - 144/180 simplified gives 4/5
- So, 15/45 + 28/60 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+28/60 15/45+56/60 15/90+28/60 15/45+84/60 75/45+28/60