Add 70/49 and 81/56
1st number: 1 21/49, 2nd number: 1 25/56
70/49 + 81/56 is 23/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 56 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
70/49 = 70 × 8/49 × 8 = 560/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
81/56 = 81 × 7/56 × 7 = 567/392 - Add the two like fractions:
560/392 + 567/392 = 560 + 567/392 = 1127/392 - 1127/392 simplified gives 23/8
- So, 70/49 + 81/56 = 23/8
In mixed form: 27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/98+81/56