Add 80/21 and 49/5
1st number: 3 17/21, 2nd number: 9 4/5
80/21 + 49/5 is 1429/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
80/21 = 80 × 5/21 × 5 = 400/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
49/5 = 49 × 21/5 × 21 = 1029/105 - Add the two like fractions:
400/105 + 1029/105 = 400 + 1029/105 = 1429/105 - So, 80/21 + 49/5 = 1429/105
In mixed form: 1364/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+98/5 80/42+49/5 80/21+49/10 80/63+49/5 80/21+49/15 80/21+49/25 80/21+49/35