Add 12/27 and 81/7
1st number: 12/27, 2nd number: 11 4/7
12/27 + 81/7 is 757/63.
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,
12/27 = 12 × 7/27 × 7 = 84/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
81/7 = 81 × 27/7 × 27 = 2187/189 - Add the two like fractions:
84/189 + 2187/189 = 84 + 2187/189 = 2271/189 - 2271/189 simplified gives 757/63
- So, 12/27 + 81/7 = 757/63
In mixed form: 121/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/27+81/7 12/54+81/7 12/27+81/14 36/27+81/7 12/81+81/7 12/27+81/21 60/27+81/7 12/27+81/35 84/27+81/7 12/27+81/49