Add 3/56 and 84/81
1st number: 3/56, 2nd number: 1 3/81
3/56 + 84/81 is 1649/1512.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
3/56 = 3 × 81/56 × 81 = 243/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
84/81 = 84 × 56/81 × 56 = 4704/4536 - Add the two like fractions:
243/4536 + 4704/4536 = 243 + 4704/4536 = 4947/4536 - 4947/4536 simplified gives 1649/1512
- So, 3/56 + 84/81 = 1649/1512
In mixed form: 1137/1512
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/56+84/81 9/56+84/81 15/56+84/81 21/56+84/81