Add 15/20 and 36/56
15/20 + 36/56 is 39/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
15/20 = 15 × 14/20 × 14 = 210/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
36/56 = 36 × 5/56 × 5 = 180/280 - Add the two like fractions:
210/280 + 180/280 = 210 + 180/280 = 390/280 - 390/280 simplified gives 39/28
- So, 15/20 + 36/56 = 39/28
In mixed form: 111/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20+36/56 15/20+72/56 15/40+36/56 45/20+36/56 15/60+36/56 75/20+36/56