Add 49/20 and 81/84
1st number: 2 9/20, 2nd number: 81/84
49/20 + 81/84 is 239/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
49/20 = 49 × 21/20 × 21 = 1029/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
81/84 = 81 × 5/84 × 5 = 405/420 - Add the two like fractions:
1029/420 + 405/420 = 1029 + 405/420 = 1434/420 - 1434/420 simplified gives 239/70
- So, 49/20 + 81/84 = 239/70
In mixed form: 329/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20+81/84 49/40+81/84 49/60+81/84