Add 4/27 and 4/21
4/27 + 4/21 is 64/189.
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,
4/21 = 4 × 9/21 × 9 = 36/189 - Add the two like fractions:
28/189 + 36/189 = 28 + 36/189 = 64/189 - So, 4/27 + 4/21 = 64/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27+4/21 4/27+8/21 4/54+4/21 4/27+4/42 12/27+4/21 4/27+12/21 4/81+4/21 4/27+4/63 20/27+4/21 4/27+20/21 28/27+4/21 4/27+28/21