Add 21/5 and 49/84
1st number: 4 1/5, 2nd number: 49/84
21/5 + 49/84 is 287/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
21/5 = 21 × 84/5 × 84 = 1764/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
49/84 = 49 × 5/84 × 5 = 245/420 - Add the two like fractions:
1764/420 + 245/420 = 1764 + 245/420 = 2009/420 - 2009/420 simplified gives 287/60
- So, 21/5 + 49/84 = 287/60
In mixed form: 447/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+49/84 21/5+98/84 21/10+49/84 63/5+49/84 21/15+49/84 21/25+49/84 21/35+49/84