Add 12/21 and 21/24
12/21 + 21/24 is 81/56.
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,
21/24 = 21 × 7/24 × 7 = 147/168 - Add the two like fractions:
96/168 + 147/168 = 96 + 147/168 = 243/168 - 243/168 simplified gives 81/56
- So, 12/21 + 21/24 = 81/56
In mixed form: 125/56
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