Add 81/30 and 63/49
1st number: 2 21/30, 2nd number: 1 14/49
81/30 + 63/49 is 279/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 49 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 30 × 49 = 1470,
81/30 = 81 × 49/30 × 49 = 3969/1470 - Likewise, for the 2nd fraction, since 49 × 30 = 1470,
63/49 = 63 × 30/49 × 30 = 1890/1470 - Add the two like fractions:
3969/1470 + 1890/1470 = 3969 + 1890/1470 = 5859/1470 - 5859/1470 simplified gives 279/70
- So, 81/30 + 63/49 = 279/70
In mixed form: 369/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/60+63/49 81/30+63/98 81/90+63/49