Add 4/18 and 6/21
4/18 + 6/21 is 32/63.
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,
4/18 = 4 × 7/18 × 7 = 28/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
6/21 = 6 × 6/21 × 6 = 36/126 - Add the two like fractions:
28/126 + 36/126 = 28 + 36/126 = 64/126 - 64/126 simplified gives 32/63
- So, 4/18 + 6/21 = 32/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18+6/21 4/18+12/21 4/36+6/21 4/18+6/42 12/18+6/21 4/18+18/21 4/54+6/21 4/18+6/63 20/18+6/21 4/18+30/21 4/90+6/21 28/18+6/21 4/18+42/21