Add 70/49 and 21/54
1st number: 1 21/49, 2nd number: 21/54
70/49 + 21/54 is 229/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 54 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 49 × 54 = 2646,
70/49 = 70 × 54/49 × 54 = 3780/2646 - Likewise, for the 2nd fraction, since 54 × 49 = 2646,
21/54 = 21 × 49/54 × 49 = 1029/2646 - Add the two like fractions:
3780/2646 + 1029/2646 = 3780 + 1029/2646 = 4809/2646 - 4809/2646 simplified gives 229/126
- So, 70/49 + 21/54 = 229/126
In mixed form: 1103/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/49+42/54 70/98+21/54 70/49+63/54