Add 21/24 and 84/7
1st number: 21/24, 2nd number: 12 0/7
21/24 + 84/7 is 103/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 7 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Likewise, for the 2nd fraction, since 7 × 24 = 168,
84/7 = 84 × 24/7 × 24 = 2016/168 - Add the two like fractions:
147/168 + 2016/168 = 147 + 2016/168 = 2163/168 - 2163/168 simplified gives 103/8
- So, 21/24 + 84/7 = 103/8
In mixed form: 127/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+84/7 21/48+84/7 21/24+84/14 63/24+84/7 21/72+84/7 21/24+84/21 21/24+84/35 21/24+84/49