Add 60/7 and 21/81
1st number: 8 4/7, 2nd number: 21/81
60/7 + 21/81 is 1669/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
60/7 = 60 × 81/7 × 81 = 4860/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
21/81 = 21 × 7/81 × 7 = 147/567 - Add the two like fractions:
4860/567 + 147/567 = 4860 + 147/567 = 5007/567 - 5007/567 simplified gives 1669/189
- So, 60/7 + 21/81 = 1669/189
In mixed form: 8157/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7+42/81 60/14+21/81 60/7+63/81 60/21+21/81 60/35+21/81 60/49+21/81