Add 12/24 and 9/21
12/24 + 9/21 is 13/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
12/24 = 12 × 7/24 × 7 = 84/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
9/21 = 9 × 8/21 × 8 = 72/168 - Add the two like fractions:
84/168 + 72/168 = 84 + 72/168 = 156/168 - 156/168 simplified gives 13/14
- So, 12/24 + 9/21 = 13/14
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