Add 2/21 and 18/24
2/21 + 18/24 is 71/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
2/21 = 2 × 8/21 × 8 = 16/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
18/24 = 18 × 7/24 × 7 = 126/168 - Add the two like fractions:
16/168 + 126/168 = 16 + 126/168 = 142/168 - 142/168 simplified gives 71/84
- So, 2/21 + 18/24 = 71/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+18/24 2/21+36/24 2/42+18/24 2/21+18/48 6/21+18/24 2/21+54/24 2/63+18/24 2/21+18/72 10/21+18/24 2/21+90/24 14/21+18/24