Add 72/49 and 81/30
1st number: 1 23/49, 2nd number: 2 21/30
72/49 + 81/30 is 2043/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
72/49 = 72 × 30/49 × 30 = 2160/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
81/30 = 81 × 49/30 × 49 = 3969/1470 - Add the two like fractions:
2160/1470 + 3969/1470 = 2160 + 3969/1470 = 6129/1470 - 6129/1470 simplified gives 2043/490
- So, 72/49 + 81/30 = 2043/490
In mixed form: 483/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/98+81/30 72/49+81/60 72/49+81/90