Add 12/21 and 8/24
12/21 + 8/24 is 19/21.
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,
12/21 = 12 × 8/21 × 8 = 96/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
8/24 = 8 × 7/24 × 7 = 56/168 - Add the two like fractions:
96/168 + 56/168 = 96 + 56/168 = 152/168 - 152/168 simplified gives 19/21
- So, 12/21 + 8/24 = 19/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+8/24 12/21+16/24 12/42+8/24 12/21+8/48 36/21+8/24 12/63+8/24 12/21+8/72 60/21+8/24 12/21+40/24 84/21+8/24 12/21+56/24