Add 84/21 and 15/24
1st number: 4 0/21, 2nd number: 15/24
84/21 + 15/24 is 37/8.
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,
84/21 = 84 × 8/21 × 8 = 672/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
15/24 = 15 × 7/24 × 7 = 105/168 - Add the two like fractions:
672/168 + 105/168 = 672 + 105/168 = 777/168 - 777/168 simplified gives 37/8
- So, 84/21 + 15/24 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+30/24 84/42+15/24 84/21+15/48 84/21+45/24 84/63+15/24 84/21+15/72 84/21+75/24