Add 12/60 and 54/21
1st number: 12/60, 2nd number: 2 12/21
12/60 + 54/21 is 97/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
12/60 = 12 × 7/60 × 7 = 84/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
54/21 = 54 × 20/21 × 20 = 1080/420 - Add the two like fractions:
84/420 + 1080/420 = 84 + 1080/420 = 1164/420 - 1164/420 simplified gives 97/35
- So, 12/60 + 54/21 = 97/35
In mixed form: 227/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/60+54/21 12/60+54/42 36/60+54/21 12/60+54/63 84/60+54/21