Add 84/63 and 21/48
1st number: 1 21/63, 2nd number: 21/48
84/63 + 21/48 is 85/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 48 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 63 × 16 = 1008,
84/63 = 84 × 16/63 × 16 = 1344/1008 - Likewise, for the 2nd fraction, since 48 × 21 = 1008,
21/48 = 21 × 21/48 × 21 = 441/1008 - Add the two like fractions:
1344/1008 + 441/1008 = 1344 + 441/1008 = 1785/1008 - 1785/1008 simplified gives 85/48
- So, 84/63 + 21/48 = 85/48
In mixed form: 137/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+42/48 84/63+21/96 84/63+63/48