Add 2/18 and 18/21
2/18 + 18/21 is 61/63.
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,
2/18 = 2 × 7/18 × 7 = 14/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
18/21 = 18 × 6/21 × 6 = 108/126 - Add the two like fractions:
14/126 + 108/126 = 14 + 108/126 = 122/126 - 122/126 simplified gives 61/63
- So, 2/18 + 18/21 = 61/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18+18/21 2/18+36/21 2/36+18/21 2/18+18/42 6/18+18/21 2/18+54/21 2/54+18/21 2/18+18/63 10/18+18/21 2/18+90/21 2/90+18/21 14/18+18/21