Add 21/7 and 30/24
1st number: 3 0/7, 2nd number: 1 6/24
21/7 + 30/24 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 7 × 24 = 168,
21/7 = 21 × 24/7 × 24 = 504/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
30/24 = 30 × 7/24 × 7 = 210/168 - Add the two like fractions:
504/168 + 210/168 = 504 + 210/168 = 714/168 - 714/168 simplified gives 17/4
- So, 21/7 + 30/24 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7+30/24 21/7+60/24 21/14+30/24 21/7+30/48 63/7+30/24 21/7+90/24 21/7+30/72 21/35+30/24 21/49+30/24