Add 1/81 and 70/49
1st number: 1/81, 2nd number: 1 21/49
1/81 + 70/49 is 817/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
1/81 = 1 × 49/81 × 49 = 49/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
70/49 = 70 × 81/49 × 81 = 5670/3969 - Add the two like fractions:
49/3969 + 5670/3969 = 49 + 5670/3969 = 5719/3969 - 5719/3969 simplified gives 817/567
- So, 1/81 + 70/49 = 817/567
In mixed form: 1250/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/81+70/49 1/81+70/98 3/81+70/49 5/81+70/49 7/81+70/49