Add 18/14 and 21/81
1st number: 1 4/14, 2nd number: 21/81
18/14 + 21/81 is 292/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 14 × 81 = 1134,
18/14 = 18 × 81/14 × 81 = 1458/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
21/81 = 21 × 14/81 × 14 = 294/1134 - Add the two like fractions:
1458/1134 + 294/1134 = 1458 + 294/1134 = 1752/1134 - 1752/1134 simplified gives 292/189
- So, 18/14 + 21/81 = 292/189
In mixed form: 1103/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/14+21/81 18/14+42/81 18/28+21/81 54/14+21/81 18/14+63/81 18/42+21/81 90/14+21/81 18/70+21/81 18/98+21/81