Add 20/27 and 81/7
1st number: 20/27, 2nd number: 11 4/7
20/27 + 81/7 is 2327/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
20/27 = 20 × 7/27 × 7 = 140/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
81/7 = 81 × 27/7 × 27 = 2187/189 - Add the two like fractions:
140/189 + 2187/189 = 140 + 2187/189 = 2327/189 - So, 20/27 + 81/7 = 2327/189
In mixed form: 1259/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27+81/7 20/54+81/7 20/27+81/14 60/27+81/7 20/81+81/7 20/27+81/21 20/27+81/35 20/27+81/49