Add 21/14 and 36/81
1st number: 1 7/14, 2nd number: 36/81
21/14 + 36/81 is 35/18.
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,
21/14 = 21 × 81/14 × 81 = 1701/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
36/81 = 36 × 14/81 × 14 = 504/1134 - Add the two like fractions:
1701/1134 + 504/1134 = 1701 + 504/1134 = 2205/1134 - 2205/1134 simplified gives 35/18
- So, 21/14 + 36/81 = 35/18
In mixed form: 117/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+36/81 21/14+72/81 21/28+36/81 63/14+36/81 21/42+36/81 21/70+36/81 21/98+36/81