Add 1/21 and 24/30
1/21 + 24/30 is 89/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
1/21 = 1 × 10/21 × 10 = 10/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
24/30 = 24 × 7/30 × 7 = 168/210 - Add the two like fractions:
10/210 + 168/210 = 10 + 168/210 = 178/210 - 178/210 simplified gives 89/105
- So, 1/21 + 24/30 = 89/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+24/30 1/21+48/30 1/42+24/30 1/21+24/60 3/21+24/30 1/21+72/30 1/63+24/30 1/21+24/90 5/21+24/30 7/21+24/30