Add 49/21 and 27/80
1st number: 2 7/21, 2nd number: 27/80
49/21 + 27/80 is 641/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
49/21 = 49 × 80/21 × 80 = 3920/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Add the two like fractions:
3920/1680 + 567/1680 = 3920 + 567/1680 = 4487/1680 - 4487/1680 simplified gives 641/240
- So, 49/21 + 27/80 = 641/240
In mixed form: 2161/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+27/80 49/21+54/80 49/42+27/80 49/21+81/80 49/63+27/80