Add 4/21 and 2/18
4/21 + 2/18 is 19/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
4/21 = 4 × 6/21 × 6 = 24/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
2/18 = 2 × 7/18 × 7 = 14/126 - Add the two like fractions:
24/126 + 14/126 = 24 + 14/126 = 38/126 - 38/126 simplified gives 19/63
- So, 4/21 + 2/18 = 19/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+2/18 4/21+4/18 4/42+2/18 4/21+2/36 12/21+2/18 4/21+6/18 4/63+2/18 4/21+2/54 20/21+2/18 4/21+10/18 4/21+2/90 28/21+2/18 4/21+14/18