Add 35/18 and 2/21
1st number: 1 17/18, 2nd number: 2/21
35/18 + 2/21 is 257/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
35/18 = 35 × 7/18 × 7 = 245/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
2/21 = 2 × 6/21 × 6 = 12/126 - Add the two like fractions:
245/126 + 12/126 = 245 + 12/126 = 257/126 - So, 35/18 + 2/21 = 257/126
In mixed form: 25/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+2/21 35/18+4/21 35/36+2/21 35/18+2/42 35/18+6/21 35/54+2/21 35/18+2/63 35/18+10/21 35/90+2/21 35/18+14/21