Add 21/7 and 20/24
1st number: 3 0/7, 2nd number: 20/24
21/7 + 20/24 is 23/6.
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,
20/24 = 20 × 7/24 × 7 = 140/168 - Add the two like fractions:
504/168 + 140/168 = 504 + 140/168 = 644/168 - 644/168 simplified gives 23/6
- So, 21/7 + 20/24 = 23/6
In mixed form: 35/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7+20/24 21/7+40/24 21/14+20/24 21/7+20/48 63/7+20/24 21/7+60/24 21/7+20/72 21/35+20/24 21/49+20/24