Add 7/21 and 36/60
7/21 + 36/60 is 14/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
7/21 = 7 × 20/21 × 20 = 140/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
36/60 = 36 × 7/60 × 7 = 252/420 - Add the two like fractions:
140/420 + 252/420 = 140 + 252/420 = 392/420 - 392/420 simplified gives 14/15
- So, 7/21 + 36/60 = 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+36/60 7/21+72/60 7/42+36/60 7/63+36/60 35/21+36/60 49/21+36/60