Add 4/27 and 63/21
1st number: 4/27, 2nd number: 3 0/21
4/27 + 63/21 is 85/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
4/27 = 4 × 7/27 × 7 = 28/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
63/21 = 63 × 9/21 × 9 = 567/189 - Add the two like fractions:
28/189 + 567/189 = 28 + 567/189 = 595/189 - 595/189 simplified gives 85/27
- So, 4/27 + 63/21 = 85/27
In mixed form: 34/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27+63/21 4/54+63/21 4/27+63/42 12/27+63/21 4/81+63/21 20/27+63/21 28/27+63/21