Subtract 9/24 from 21/7
1st number: 3 0/7, 2nd number: 9/24
21/7 - 9/24 is 21/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 7 × 24 = 168,
21/7 = 21 × 24/7 × 24 = 504/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
9/24 = 9 × 7/24 × 7 = 63/168 - Subtract the two like fractions:
504/168 - 63/168 = 504 - 63/168 = 441/168 - After reducing the fraction, the answer is 21/8
- In mixed form: 25/8
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