Add 21/60 and 90/14
1st number: 21/60, 2nd number: 6 6/14
21/60 + 90/14 is 949/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 14 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Likewise, for the 2nd fraction, since 14 × 30 = 420,
90/14 = 90 × 30/14 × 30 = 2700/420 - Add the two like fractions:
147/420 + 2700/420 = 147 + 2700/420 = 2847/420 - 2847/420 simplified gives 949/140
- So, 21/60 + 90/14 = 949/140
In mixed form: 6109/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+90/14 21/60+90/28 63/60+90/14 21/60+90/42 21/60+90/70 21/60+90/98