Add 21/84 and 49/30
1st number: 21/84, 2nd number: 1 19/30
21/84 + 49/30 is 113/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
49/30 = 49 × 14/30 × 14 = 686/420 - Add the two like fractions:
105/420 + 686/420 = 105 + 686/420 = 791/420 - 791/420 simplified gives 113/60
- So, 21/84 + 49/30 = 113/60
In mixed form: 153/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84+49/30 21/84+98/30 21/84+49/60 63/84+49/30 21/84+49/90